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Mobil 1 Turbo Diesel

Mobil 1™ Turbo Diesel Truck

Mobil 1™ Turbo Diesel 5W-40 is rated 4.4 out of 5 by 11.
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Helps extend engine life for modern diesel engines even in severe applications

Mobil 1 Turbo Diesel Truck is a full synthetic heavy-duty performance diesel engine oil that can help extend engine life while providing long drain capabilities.

Mobil 1 Turbo Diesel Truck oil is engineered with state-of-the-art technology to help deliver exceptional performance in modern low emission engines. It meets or exceeds demanding specifications of major truck manufacturers, which means a single engine oil formulation can be used for mixed fleet operations.

This advanced full synthetic diesel oil formula is recommended for use in a wide range of both light- and heavy-duty applications, from turbo diesel pickup trucks to severe on- and off-highway heavy-load conditions.

Please reference our Mobil 1™ Product Guide for a quick look at specifications including zinc and phosphorus, as well as manufacturer approvals for Mobil 1 motor oils.

Always follow oil change intervals recommended in your owner’s manual. With the high-performance reserves of our Mobil 1 motor oils, you can have the confidence to go the full mileage or time frame recommended by the vehicle manufacturer. Mobil 1 motor oils are especially suitable for the latest vehicles that allow you to extend or vary oil drain intervals. We stand behind our products; please read our Mobil 1 limited warranty

Features and benefits

Outstanding thermal and oxidation stability

  • Helps reduce low-temperature sludge buildup and high-temperature deposits

Enhanced film strength at high temperatures

  • Helps reduce engine scuffing and bore polishing

Inherent stay-in-grade shear stability

  • Supports wear protection and reduced oil consumption
  • Helps maintain viscosity in severe, high-temperature service

Low volatility

  • Helps to control oil consumption

Long drain capability

  • Helps to increase operating efficiency and lower overall cost

Exceptional low-temperature pumpability

  • Supports easier engine startup
  • Helps reduce wear

Outstanding resistance to corrosion

  • Helps extend life of critical wear surfaces

Helps promotes component longevity

  • Supports long gasket and seal life
  • Helps extend service intervals

Enhanced TBN quality reserve

  • Helps to deposit control and extended drain capability

  • 5W-40

    Specifications and approvals

    Mobil 1 Turbo Diesel Truck 5W-40 synthetic motor oil meets or exceeds the requirements of the following industry and builder specifications:

    • API CK-4, CJ-4, CI-4 PLUS, CG-4, CI-4, CH-4, SN, SM, SL
    • ACEA E9-12, E7
    • Caterpillar ECF-3

    Technical details

    SAE Grade 5W-40
    Viscosity, cSt (ASTM D445)
    @ 40ºC 97.9
    @ 100ºC 14.5
    Viscosity Index 153
    Phosporous (ASTM D4951) 0.11
    HTHS Viscosity, mPa•s @ 150ºC (ASTM D4683)     3.8
    Sulfated Ash, wt% (ASTM D874) 0.95
    Total Base #, mg KOH/g (ASTM D2896) 10.7
    Flash Point, ºC (ASTM D92) 215
    Density @ 15.6ºC g/ml (ASTM D4052) 0.85

    View product data sheet for Mobil 1™ Turbo Diesel Truck 5W-40



Show reviews
Rated 5 out of 5 by from Best oil on the market I have a 2005 Silverado 2500 with LLY duramax diesel. I have used mobile 1 turbo diesel since new. I now have 351000 miles without ANY problems, truck still runs like new, I have original injectors and turbo, I change oil using vehicle oil monitor, usally at 10000 miles between changes . I also use mobile 1 synthetic trans fluid and mobile 1 75w 90 synthetic gear oil. Never had a rebuild on trans or differential. I wouldn't use anything else.
Date published: 2017-10-30
Rated 5 out of 5 by from Perfect for nissan v6 VG33E Used this in my gasoline engine. After purchasing my used 2001 Nissan Xterra V6 I noticed a little engine noise. I messed with a few different oils and noticed how picky this engine is with different viscosities. To make a long story short, finally I tried the 5w-40 tdt and I couldn't be happier. The engine runs like new, smooth as butter, has plenty of power and is quieter than ever. For smooth, quiet operation with maximum protection I would use this oil in anything requiring 5w-30 , 10w-30 or 10w-40
Date published: 2017-06-14
Rated 5 out of 5 by from worry free performance When i bought my 1997 f250 from the original owner i didnt immediately switched to mobil 1 oil. I use my truck for some daily use, towing, and traveling and noticed some cold weather performance issues. I switched over and the hard starts went away, it ran smoother with less warm up time, and I've noticed small MPG gains. I've even stretched a couple oil changes out to almost a year and 8k miles and I could still see through the oil when i drained it. Money well spent!
Date published: 2015-10-01
Rated 5 out of 5 by from Fantastic oil for light duty trucks My 2000 Dodge 2500 tower a 40.5 foot fifth wheel so I wanted the best motor oil I could find for my truck. I now have over 220000 miles on it and purrs like a kitten. I change it every 7000 miles along with either the Mobile oil filter or the K&N filter. If your looking for a full sythitic oil for your light duty truck this is it. Thanx Mobil1. I'll see you at 500,000 miles I'm sure of it.
Date published: 2015-01-04
Rated 5 out of 5 by from Works for me 2002 7.3 Even though it isn't recommended for a 7.3 Diesel I've been using it 4 years now. My truck loves the stuff. It starts much easier on cold mornings not even plugged in you can tell a big difference from the standard 15-40 Diesel oil. I pull a 10,000 lb trailer from Ogden Utah to Aguilar Colorado once or twice a year. I haven't had any oil related issues at all. Starts and runs quieter with great oil pressure and no oil leaks period. I change the oil once a year now 5000 -7000 miles is normal. The truck has 168000 miles on it so it isn't a high mileage truck but it gets used for pulling. It might not be recommended for the 7.3 but my truck runs better with it. Doesn't matter the weather conditions either...cold or hot this oil makes my truck run better. I don't know much about oils I just wanted to try it cause I had slow cranking issues in cold weather here. Won't go back to 15-40 stuff unless I can't get the 5-40.
Date published: 2019-01-30
Rated 5 out of 5 by from Great product Have a 2015 Ford Superduty 6.7. Been using this product for 244,000 miles with no issues. Changing the oil at 7500 mile intervals. Only down fall is the cost, but you get what you pay for.
Date published: 2019-03-14
Rated 1 out of 5 by from Contaminated fresh oil Upon opening a new 3.78 liter jug I noticed a purplish tint and after filling the engine there is fine dark residue left inside the jug. Going back to AutoZone foot reimbursement of said oil and now a new filter. Hopefully this didn't ruin my engine before I make it to AutoZone and back home.
Date published: 2017-02-11
Rated 2 out of 5 by from Not recommended for older powerstroke diesels Mobile one's online product finder does not recommend this for 7.3 Powerstroke Turbo Diesel trucks. Too bad. I use M1 in my cars and like it. Probably it's lower viscosity won't work properly with injection system.
Date published: 2018-04-05
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