Shell Helix Ultra ECT C3 5W-30 motorolaj 4L 5W-30 motorolaj- az Olajwebshop.hu knlatban. Shell Shell Helix ULTRA ECT C3 5W-30 engine oil 1L In-Store Contact your local store for availability. Shell Helix Ultra ECT 5W-30 Passenger Car Motor Oil. Shell Helix Ultra ECT C3 5W-30 Shell PurePlus Technology Motorenl - der ultimative Schutz von Shell fr Fahrzeuge mit Abgasnachbehandlungssystemen Seite 2 von 2 Shell Helix Ultra ECT C3 5W-30 (C3, MB 229.51, BMW LL-04), v 1.8 06.02.2015.17.17 Shell Deutschland Oil GmbH Page 1 of 2 Shell Helix Ultra ECT 5W-30 (VW 504.00/507.00, BMW LL-04, MB Approval 229.51), v 1.218.02.2014.17.48 Rpond aux spcifications moteur de niveau ACEA C3. Considering the average price of VW 504.00/507.00 approved oils, this one is actually at the cheaper end of the market, yet I believe it is one of the best available. 29 Get it Wednesday, Apr 27 ACEA C3; API SN; BMW-LL-04; MB Approval 229.31, 229.51; GM dexos2TM licence n GB2C0710014; Chrysler MS-11106; Recomendaciones antes de usar Shell Helix Ultra ECT 5w30.
Prisijungti. Pack Size: 3x5L: Tech Spec: ACEA C3, API SN, MB 229.51/229.31, BMW LL-04 Here in the states that oil can be used only in a diesel engine as BMW BUICK CADIL CHEVROLET CHRYS CITROEN DACIA DAEWOO motorov olej CASTROL MAGNATEC C3 5W-40 4L. Shell Helix Ultra ECT C3 features its most advanced emissions-compatible technology that helps to keep diesel particulate filters clean to help maintain engine performance. Mobil Super 3000 Formula V 5W-30 Valvoline has the a low TBN number compares to other oils The oil you are refering to is semi synthetic AmeerUsman (AmeerUsman) 2013-02-27 14:30:45 +0500 #5 well I get shell HX7 5w-30 fully synthetic 4 litre in 2400/ 946ML SHELL 5W30 FORMULA MOTOR OIL Mobil 1 Esp Formula 5W-30 5lt Mobil 1 Esp The Shell Helix Ultra X 5W30 is Specifications: API SN PLUS/SN; ACEA A3/B4; BMW LL-01; MB approval 229.5, 226.5; Renault RN0700, RN0710. Protects emission systems by helping to keep diesel particulate filters clean. 8.0/10 (Perustuu yli 11 asiakasarvioon) Valmistajan hyvksym: BMW Longlife-04, Chrysler MS-11106, DEXOS 2, MB 229.31, MB 229.51; Tuotteiden katsaus. 2 Based on ACEA M 111 fuel economy results vs the industry reference oil. Shell Helix Ultra Professional AV-L 0W-20. Mazda 5W-30 ULTRA DPF 1L: : 5 . Shell 1287495 550051529 . Shell Helix Ultra ECT C3 Engine Oil - 5W-30 - 5Ltr Product Code: 521774551(49 Reviews) In Stock. ACEA C3. Check stock in other stores Fit It For Me. Brand: Shell. Range: Fully Synthetic Engine Oil. Shell Helix Ultra ECT C3 5W30 4 . Active Cleansing Technology has always been at the heart of Shell Helix. BMW LL-04. Engine Oil. 05. Only show this user. Search: Formula Shell 5w30. Munksotthon utca 52.: 06 1 898 0557 Budapest XI. 4,9 / 5 207 opinii Shell Helix Ultra ECT C3 5W-30 veikia pagal naujovik Shell taros suderinamumo technologij, kuri skirta imetamj teral papildomo apdorojimo sistem apsaugai.
Shell Helix Ultra ECT C3 5W-30 je vrhunsko motorno [] Shell Helix Ultra ECT C3s fully synthetic formulation uses Shells most advanced emissions-compatible technology to help gasoline engine exhaust catalysts and keep diesel particulate filters clean and protects it from ash build-up that can block the exhaust system and lead to reduced engine performance. Akce Motorov olej BMW TwinPower Turbo LL-04 5W-30, 1L 279 K . viscosity. Shell Helix Ultra Professional AP-L 5W-30. 0 (thi) Helix Ultra ECT C3 5W-30: BMW: LL-04: MB: 229.51: MB: 229.31: GM: dexos2: CHRYSLER: MS-11106 Siin avaldatud andmeid eelkige kogu andmebaasi andmeid ei tohi kopeerida. Sintetine variklio alyva automobiliams Shell 5W30 HELIX HX8 ECT +37068252282. 1 Applicable to vehicles where an API SN or ACEA C3 oil is required. Spetsifikatsioonid ja heakskiidud: BMW LL-04, MB-229.51 ja 229.31, GM dexos2 ja Chrysler MS-11106. Low viscosity and low friction: Up to 1.7% greater fuel economy. Aceite Shell Helix Ultra 5w30 C3es uno de los aceites de motor con los ltimos avances. Navren ke splnn nronch poadavk vysoce vkonnch motor BMW a Mercedes-Benz a tak pro motory vyadujc API SN/CF nebo ACEA C3. Specifications, Approvals & Recommendations: ACEA C3, API SN, MB-Approval 229.51, 229.31. Castrol Edge wybraem sugerujc si opiniami innych uytkownikw modeli BMW oraz serwisu. Motorno ulje Shell Helix Ultra ECT C3 5W-30 u pakiranju od 1 litre. Shell Helix Ultra ECT C3 5W30 4 , - . Search: Formula Shell 5w30. Low viscosity and low friction characteristics for up to 1.7% greater fuel economy 2.
Neturite paskyros? Motorov olej Shell Helix Ultra 5W-40, 4L 639 K Motorov olej Shell Helix HX8 ECT 5W-30, 5L 899 K . Shell. Shell Helix Ultra ECT C3 Engine Oil - 5W-30 - 5Ltr Product Code: 521774551 (37 Reviews) In Stock FREE delivery available* Next day delivery available (Order before 4pm Mon-Thur) Qty.
This would mean 5.10 euros a litre. Opie Price. Rodzaj: Elf Evolution FULL-TECH FE 5W/30 (RN0720) 5L. BMW: LL-04: MB: 229.51: GM: Dexos2: Chrysler: MS-11106 . Jul 7, 2015. 3 Compared with higher viscosity oils. The gas in Europe is ultra low sulphur so BMW LL04 oil is the correct oil for your engine. 07. 332.62 . Shell Helix HX8 ECT, SAE 5W-30. Top quality 100% good grade oil very happy with the quality of this oil. TOP TILBUD Kb Motorolie SHELL Helix, Ultra ECT C3 550042826 Olie 5W-30, 4l til lav pris Du kan spare op til % Kb nu TOP TILBUD Kb Motorolie SHELL Helix, Ultra ECT C3 550042826 Olie 5W-30, 4l til lav pris Du kan spare op til % Kb nu BMW Longlife-04, DEXOS 2, MB 229.31, MB 229.51, Chrysler MS-11106; 335.33 . Typical Physical Characteristics These characteristics are typical of current production.
Motor ya Shell Helix Ultra ECT C3 5W30 / 1 litrlik 25 AZN Baqa mhsullarmz: Mobil, empion 0W20: Shell Helix Ultra SN Plus 0W20, Shell Helix Hybrid 0W20 0W30: Shell Helix Ultra ECT C2/C3 0W30, Shell BMW TP LL01 FE, Shell BMW LL04 0W30 0W40: Shell Helix Ultra 0W40 5W20: Shell Helix Ultra Pro AF 5W20 It helps to reduce engine friction to provide enhanced fuel economy. giantkingsquid; Feb 9, 2022; Fuchs Titan GT1 PRO C3 5w30 vs Shell helix ultra am-l 5w30 for bmw ll04 N52. Location.
Free Delivery over 50, next day delivery 4.99. Search: Formula Shell 5w30. Shell Helix Ultra ECT C3 5W-30 is an engine oil which features its most advanced emissions-compatible technology that helps to keep diesel particulate filters clean to help maintain engine performance.
Shell Helix Ultra Extra ECT 3 5w/30. 12. Shell Helix Ultra ECT C3 features its most advanced emissions-compatible technology that helps to keep diesel particulate filters clean to help maintain engine performance. ptal ve ade Koullar.
Shell Helix Ultra ECT 5W-30 Approvals and specifications: VW 504 00/507 00 Porsche C30 ACEA C3 * The naming of names, trademarks, brand names or article numbers are only for the purpose of assignment Shell Rotella T6 Multi-Vehicle 5W-30 full synthetic heavy duty engine oil is formulated to perform well in gasoline engines, without 5W30 Packaging: 4L Brand: Shell Specifications: ACEA C3 API SN BMW LL-04 MB 229.31 MB 229.51 GM Dexos 2 CHRYSLER MS 11106. Shell Helix Ultra Extra 5w-30 is a premium-grade, fully synthetic engine oil scientifically formulated with ultimate active cleansing technology. It helps to reduce engine friction to provide enhanced fuel economy. 1. Starting with the unique Shell PurePlus Technology allows the product to provide even higher levels of cleansing and protection. Shell Helix Ultra ECT 5W-30 Passenger Car Motor Oil. Oct 30, 2016. It helps to reduce engine friction to provide enhanced fuel economy. Shell helix 5w30 aml is only sold in 1l bottles and costs 8 euros a litre. 4,90 Versand Lieferung Di. Prisijungti Pamirai slaptaod? Down Under. Specifications - Shell Helix Ultra ECT C3 5W-30. n itt ll: Foldal 1 / zlet 2 / Kenanyagok 3 / Szemlygpjrm 4 / Shell Helix motorolajok 5 / 5W-30 motorolaj 6 / Shell Helix Ultra ECT C3 5W-30 Mercedes-Benz; BMW. Shell Helix HX8 ECT 5W-30 - . GB2C0710014, Chrysler MS-11106 Pln syntetick motorov olej, pro jeho vrobu byla pouita nejpokroilej technologie Shell zajiujc kompatibilitu se systmy na pravu spalin. Shell Helix Ultra ECT C2/C3 0W-30. Quaker State Ultimate Durability: S$49 /5qt Jug This item is gift eligible Learn more The competing oils included petroleum-based Castrol GTX, Chevron Supreme, Havoline, Formula Shell and Pennzoil, as well as synthetic-blends Trop Artic and Motorcraft, and full-synthetic Pennzoil Platinum, Quaker State Advanced Full Synthetic and Mobil Shell Helix Ultra ECT C3 5W-30 provides: Unsurpassed sludge protection no other motor oil can keep your engine closer to factory clean 1. Low viscosity and low friction: Up to 1.7% greater fuel economy. Shell Helix Ultra ECT 5W-30 Passenger Car Motor Oil . : TOYOTA 08880-80836: Toyota 5W-40 1L: : 50+ . InstagramInstagram25 Manufacturer. Price 85.99 Save 45%. You may also be interested in the following product(s) Shell Helix Ultra ECT C3 features its most advanced emissions-compatible technology that helps to keep diesel particulate filters clean to help maintain engine performance. Home Delivery Free Delivery for orders over 30*. Typische Kennwerte Typische Kennwerte aus der aktuellen Produktion. Ovo ulje takoer poboljava performanse i radni vijeka motora. - Mi. Shell Helix Ultra ECT 0W-30 is suitable for use in vehicles currently using SAE 5W-30 or 10W-30 grades, providing enhanced engine protection and fuel economy 1. Juli Prisijungti Pamirai slaptaod? SHELL Mootorili HELIX ULTRA ECT C3 5W30 4L. Fellmlhatatlan vdelem az olajiszap ellen a motort minden ms motorolajnl jobban tartja a gyri tisztasghoz a lehet legkzelebbi llapotban. Predte ivotnos vho motora s plne syntetickm olejom SHELL Ultra ECT C3 5W-30. 229,31; BMW LL-04; GM dexos2 TM ; Chrysler MS-11106. 1. Shell Helix Ultra Professional AT-L 5W-30. (1998 audi 8l 1.8T) Some forums are saying that 504 is backward and protection. Akce Motorov olej GM DEXOS 2 5W-30, 5L 669 K . BMW LL-04, GM dexos2TM -Licence GB2C0710014, Chrysler MS-11106. The Shell Professional line of oils is usually for garages and workshops etc.
Kosrba teszem. Starting with the unique Shell PurePlus Technology allows the product to provide even higher levels of cleansing and protection. 15W-40 10W-40 5W-40 5W-30 5W-20 0W-20 0W-30 0W-40 10W-60 Advance Spirax Rimula Tellus Gadus Omala. shell helix ultra ect c3 5w-30 - 153 - , - 1-2 , , - Akce Motorov olej Castrol EDGE Titanium Professional LongLife III 5W-30, 1L 225 K . 5.0 out of 5 stars 1 rating. Reviews. Enhance your purchase . Shell Helix Ultra ECT C2/C3 0w-30 Fully Synthetic Engine Oil. SHELL HELIX ULTRA ECT C3 5W-30 je plne syntetick motorov olej pre motory osobnch a itkovch automobilov s benznovmi a naftovmi motormi s longlife -ovm intervalom pre BMW, Opel Chevrolet, Mercedes Benz vybavench filtrom pevnch astc (DPF). Now i see that i can get 20l jug of fuchs titan GT1 pro c3 with bmw ll04, mb229.51 vw approval for 102 euros. Page 1 of 2 Shell Helix Ultra ECT C3 5W-30 (C3, MB 229.51, BMW LL-04), v 1.8 05.06.2015.11.34. .
. Considering the average price of VW 504.00/507.00 approved oils, this one is actually at the cheaper end of the market, yet I believe it is one of the best available. SRS Viva1 Topsynth Alpha LA 5W-30 - . SsangYong 5W-30 - . Texaco Havoline ProDS V 5W-30 - Shell Helix Ultra 5W-40. Shell Helix Ultra ECT C2/C3 0W-30 in 2.0L Ecoboost? Shell Helix Ultra ECT C3 features its most advanced emissions-compatible technology that helps to keep diesel particulate filters clean to help maintain engine performance. OSOBN ODBER ZDARMA KOICK KRAJ DOPRAVA ZDARMA. Stranica 1 od 2 Shell Helix Ultra ECT C3 5W-30 (C3, MB 229.51, BMW LL-04), v 1.8 25.02.2015.11.56. Unsurpassed sludge protection: No other motor oil cleans your engine better.
Shell Helix Ultra ECT C3 features its most advanced emissions-compatible technology that helps to keep diesel particulate filters clean to help maintain engine performance. Prisijungti. Spluje specifikace: API SN; ACEA C3; MB229.51, 229.31; BMW LL-04; GM Dexos 2 - licence GB2CO710014; Chrysler MS-11106; Vkon, vlastnosti a vhody: vynikajc istota motoru - aktivn a dlouhodob zabrauje usazovn kodlivch neistot v motoru; OP, that oil is fine. MOBIL. Active Cleansing Technology has always been at the heart of Shell Helix. Starting with the unique Shell PurePlus Technology allows the product to provide even higher levels of cleansing and protection. ACEA C3, API SN, BMW LL-04, MB-Approval 229.51. : Shell Helix Ultra ECT C3 5W-30: 1. Shell Helix Ultra ECT C3 features its most advanced emissions-compatible technology that helps to keep diesel particulate filters clean to help maintain engine performance. Page 2 of 2 Shell Helix Ultra ECT C3 5W-30 (C3, MB 229.51, BMW LL-04), v 1.8 05.06.2015.11.34. Shell Helix Ultra Professional AM-L 5W-30: Is designed to meet the demanding requirements of particular high-performance engines, including BMW and Mercedes-Benz, and those requiring API SN/CF or ACEA C3. Shell Helix Ultra ECT C3 5W-30 poskytuje: Neprekonaten ochrana proti kalu iadny in motorov olej neme udriava v motor tovrensky ist BMW LL-04 GM dexos2 Chrysler MS-11106 . 10,98 / L. tk. Shell - Helix Ultra ECT C3 5W-30 - 1L. Pack Size: 20l: Tech Spec: ACEA C3, API SN, MB 229.51/229.31, BMW LL-04
Top quality 100% good grade oil very happy with the quality of this oil. Fully Synthetic Engine Oil with PurePlus technology - Shell's ultimate protection for vehicle emission systems. Shells advanced emissions-compatible technology for lowSAPS oil: Protects emission systems by helping to keep diesel particulate filters clean. : 6 !!
Viscosity: 5w-30: Brand: Shell: Vehicle Service Type: Car: Liquid Volume: 33.81 Fluid Ounces: Buy it with + + Total price: To see our price, add these items to your cart. Tipins fizins savybs. Juli. Mar 16, 2022. Shell Helix Ultra ECT C3 5W-30 - 1L ACEA C3, API SN, BMW LongLife-04, MB-Approval 229.31, 229.51, GM dexos2 TM licence no. It works harder than conventional motor oils to continuously prevent dirt and sludge build-up while protecting sensitive exhaust gas treatment system. Vekou vhodou je jeho univerzlnos, ktor umouje pouitie oleja do benznovch i dieselovch motorov. Prisijungti.
Search: Formula Shell 5w30. Unsurpassed sludge protection: No other motor oil cleans your engine better. Starting with the unique Shell PurePlus Technology allows the product to provide even higher levels of cleansing and protection. Shell Helix Ultra ECT C2/C3 0W30 1 (550042390) : Shell : : MB 229.51 MB 229.31 SN VW 507.00 C2 MB 229.52 VW 504.00 PORSCHE C30 C3 : : 550042390,550046358
Shell Helix Ultra ECT C3 5W30 5 l. 59-0120. Page 1 of 2 Helix Ultra 5W-30 (SL A3/B4), v 6.5 25.10.2018.08.18. Pack Size: 209l: Tech Spec: ACEA C3, API SN, MB 229.51/229.31, BMW LL-04 ker. Shell Helix Ultra Professional AM-L 5W-30 je pln syntetick motorov olej formulovan na mru specilnm poadavkm vrobc motor. Tarnekulud alates 0,00. Specifications - Shell Helix Ultra ECT C3 5W-30. Aceite Shell Helix Ultra ECT 5w30 C3 5L. Starting with the unique Shell PurePlus Technology allows the product to provide even higher levels of cleansing and protection. TOP ANGEBOT Motorl und Schmierstoffe online kaufen bei AUTODOC Wir haben eine groe Auswahl an verschiedenen Marken Gnstige Preise Jetzt bequem online bestellen Flyingdutchman; Mar 5, 2022; Passenger Car Motor Oil (PCMO) - Gasoline Vehicles; Replies 3 Views 765. Easy online ordering for the ones who get it done along with 24/7 customer service, free technical support & more 5W30 Engine Oil Je to nstupce ady Ford Formula E 5W-30 Shell Helix Ultra Professional AP-L 5W-30 1L nahrdza olej Shell Helix Ultra AP-L 5W-30 . Price 80.22 Save 38%. : SHELL 550042844: Shell Helix Ultra ECT
ACEA C3, API SN, BMW LL-04, Chrysler MS-11106, MB-Approval 229.51. Shell Helix Ultra ECT C3 5W-30 is suitable for use in passenger, 4x4 and light commercial vehicles that require the use of ACEA C3, API SN or earlier specification 5W-30 engine oil. Tippklassi tissnteetiline SAPS 5W30 mootorili pika vahetusvlbaga bensiini- ja diiselmootoritele. Shells advanced emissions-compatible technology for lowSAPS oil: Protects emission systems by helping to keep diesel particulate filters clean. vs. Mobil 1 5W-30 Fully Synthetic Motor Oil . Shell Helix Ultra ECT C3 5W-30 4L. 47.29. QTY: Add To Basket. Moottoriljy SHELL -luettelosta; Tuotenumero 550042845; Porsche C30 Puede consultar el producto Shell Helix ms apropiado para su Page 1 of 2 Shell Helix Ultra ECT C3 5W-30 (C3, MB 229.51, BMW LL-04), v 1.8 04.02.2015.11.18.
Shell Helix Ultra ECT C3 5W-30 je potpuno sintetiko motorno namijenjeno modernim vozilima sa sustavima za smanjenje emisije koja zahtjevaju ACEA C3 specifikaciju ulja. Direction les rductions Acheter Huile moteur SHELL 550042826 Helix, Ultra ECT C3 5W-30, Capacit: 4I bon prix Nous vous proposons une vaste gamme de Huile moteur SHELL 201510301069 et d'autres accessoires et pices dtaches de qualit suprieure Shell Helix Ultra ECT C3 5W-30 provides: Unsurpassed sludge protection no other motor oil can keep your engine closer to factory clean 1. Opie Price. Description:Shell Helix Ultra ECT C3 5W-30 Pure Plus Fully Synthetic Car Engine Oil. - Di. Specifikace: SAE 5W-30, ACEA C3, API SN, BMW LL-04, MB-Approval 229.31/ 229.51, GM DEXOS 2 licence no. Shell Helix Ultra ECT C3 5W-30 provides: Unsurpassed sludge protection no other motor oil can keep your engine closer to factory clean 1. C30054 Shell Helix Ultra ECT C3 5W-30 Vollsynthetisches Motorenl - Der ultimative Schutz von Shell fr die Abgassysteme von Seite 1 von 2 Shell Helix Ultra ECT C3 5W-30 (C3, MB 229.51, BMW LL-04), v 1.8 27.02.2015.11.37. Created Date: Shell Helix Ultra 5W-30 ECT C3-arbeitet mit der innovativen "Emissions Compatible Technology" von Shell, API SN, BMW LL04, C3, Dexos 2, MB 229.31, MB 229.51. Search: Formula Shell 5w30. Meets or exceeds industry standards: Shell Helix Ultra ECT C3 5W-30 55L API SN, ACEA C3, MB 229 Shell Helix Ultra ECT C3 5W-30 55L API SN, ACEA C3, MB 229. Other reviews. Shell Helix Ultra ECT C3 5W-30, 4L. Podczas eksploatacji auta nie zaobserwowaem adnych nieprawidowoci. Now i see that i can get 20l jug of fuchs titan GT1 pro c3 with bmw ll04, mb229.51 vw approval for 102 euros. Active Cleansing Technology has always been at the heart of Shell Helix. Nhradn dl na automobil Helix Ultra ECT C3 5W-30 - 1L od vrobce Shell kd SH-550049781. Shell Helix Ultra ECT C3 5W-30 Mercedes-Benz; BMW mennyisg. Qty. shell helix ultra ect - 146 - , - 1-2 , , - $ 280$400 / 270 shell helix ultra ect c3 5w-30 5w-30 ll04 229.51 sn. Caractristiques types Ces valeurs sont typiques de la production actuelle. ker. 27.00 s DPH. Be the first to review this product. Shell Helix Ultra ECT C3 5W-30 1 Liter 1 9,99 zzgl. It helps to reduce engine friction to provide enhanced fuel economy. 5W30. Shell Helix Ultra ECT C3 5W-30 provides: Unsurpassed sludge protection no other motor oil can keep your engine closer to factory clean 1. 06. Helix HX8 5W-40 HELIX ULTRA ECT C3 5W-30 5W-30 4 . PurePlus-tehnoloogia hoiab mootori puhtana. Shell helix 5w30 aml is only sold in 1l bottles and costs 8 euros a litre. I would guess 3.5 to 3.6 for the HTHS, going by other 5W30 C3 or A3/B4 oils with a similar KV100 of about 12 cSt. Related products. $34.99 $ 34. Shell Helix Ultra ECT C2/C3 0W-30 - . Shell Helix Ultra ECT C3 5W30. bmw cvt 12 eneos 5w30 5w-30 motul mobil swd. 4,8 / 5 323 opinii Dodaj do ulubionych. 1 Liter MANNOL 5W-30 LONGLIFE 504/507 BMW Longlife-04 MB 229.51 Porsche C30 VW 504 00 VW 507 00 VW TL 52 195 15 11,51 Kostenloser Versand Lieferung Do. shell helix ultra ect c3 5w-30 - 153 - , - 1-2 , , - Flyingdutchman. Olej bol navrhnut tak, aby ochrnil motory modernch vozidiel proti opotrebeniu aj v nronch podmienkach kadodennej prevdzky.
Durch Weiterentwicklung von Produkt und Produktion bedingte SHELL Helix, Ultra ECT C3 Motorolaj 550042845 5W-30, Trfogat: 5l | Rendelje meg most!
shell helix ultra ect - 146 - , - 1-2 , , - SHELL HELIX ULTRA ECT 5W-30 PASSENGER CAR MOTOR OIL 1LTR . 49.63. Non stop online Vsroljon kedvez ron SHELL Helix, Ultra ECT C3 550042845 Motorolaj 5W-30, Trfogat: 5l alkatrszt - eredeti minsg Kompatibilis BMW, OPEL, MERCEDES-BENZ, CHEVROLET, JEEP s ms gpkocsikkal.