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Mobil 1™ FS

Mobil 1™ FS 0W-40 is rated 4.8 out of 5 by 98.
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Delivers excellent overall performance for the latest gasoline and diesel engine technology without diesel particulate filters (DPFs)

Mobil 1 FS advanced full synthetic motor oils are designed with a proprietary blend of ultra-high-performance synthetic base stocks fortified with a precisely balanced component system.

Mobil 1 FS oils keep your engine running like new in all driving conditions. They provide exceptional cleaning power, wear protection and overall performance.

Of the product lineup, Mobil 1™ FS 0W-40 oil is recommended for many types of modern vehicles and the latest engine technologies including turbochargers, direct-injection, diesels (without DPF) and hybrids, where it helps provide exceptional performance even under very demanding driving conditions.

Of the product lineup, Mobil 1™ FS X2 5W-50 oil features race-proven technology that is suited for extreme driving conditions and motorsports applications.

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.

We stand behind our products. Read our Mobil 1 limited warranty.

Features and benefits

Advanced full synthetic formula

  • Helps prevent deposits and sludge buildup to enable long engine life
  • Provides overall lubrication and wear protection performance for many driving styles

Excellent low-temperature capabilities

  • Support quick cold-weather starting and ultra-fast protection
  • Help extend engine life and reduce stress on starting system components

Available viscosity grades

What does this viscosity mean?
  • 0W-40

    Specifications and approvals

    Mobil 1 FS 0W-40 meets or exceeds the requirements of: 

    • API SN, SM, SL, SJ
    • ACEA A3/B3, A3/B4

    Mobil 1 FS 0W-40 has the following builder approvals:  

    • MB-Approval 229.3 
    • MB-Approval 229.5  
    • VW 502 00/505 00 
    • PORSCHE A40 
    • Nissan Genuine Performances
    • AVTOVAZ (LADA cars) Approved 

    According to ExxonMobil, Mobil 1 FS 0W-40 is of the following quality:

    • API CF 
    • VW 503 01
    • FIAT 9.55535-M2

    Technical details

    SAE Grade
    0W-40
    Viscosity @ 100ºC, cSt (ASTM D445)
    12.9
    Viscosity@ 40ºC, cSt (ASTM D445)
    70.8
    Viscosity Index 186
    Sulfated Ash, wt% (ASTM D874)
    1.34
    HTHS Viscosity, mPa•s @ 150ºC (ASTM D4683)     3.6
    Flash Point, ºC (ASTM D92)
    226
    Density @ 15ºC, g/ml  (ASTM D4052)
    0.8456

    View product data sheet for Mobil 1 FS 0W-40
    This is a replacement to product Mobil 1 0W-40


  • 0W-50

    Specifications and approvals

    Mobil 1 5W-20 synthetic motor oil meets or exceeds the requirements of:

    • ACEA A1/B1
    • API SN, SM, SL, SJ
    • ILSAC GF-5
    • Ford WSS-M2C945-A

    Mobil1 5W-20 has the following builder approvals:

    • General Motors Service Fill dexos1™

    According to ExxonMobil, Mobil 1 5W-20 is of the following quality level:

    • Ford WSS-M2C930-A
    • General Motors GM 6094M
    • API CF

    Technical details

    SAE Grade 5W-50
    Viscosity @ 100ºC, cSt (ASTM D445) 17.1
    Viscosity @ 40ºC, cSt (ASTM D445) 104.3
    Viscosity Index 179
    Sulfated Ash, wt% (ASTM D874) 1.34
    HTHS Viscosity, mPa•s @ 150ºC (ASTM D4683)         4.4
    Flash Point, ºC (ASTM D92) 232
    Density @ 15ºC g/ml, (ASTM D4052) 0.8499

    View product data sheet for Mobil 1™ FS X2 5W-50
    This is a replacement to product Mobil 1 5W-50



Show reviews
Rated 5 out of 5 by from Great cleaning ability I just started using this oil, and it's working great! According to the PDS, it "Provides exceptional cleaning power for dirty engines". This is proving to be true, I have been looking down the oil fill cap with a flashlight since I started using this oil, and what I can see of the valve train is becoming cleaner. The other oil brands prior to Mobil left the metal with a layer of yellowish/orange varnish. The Mobil 0W-40 is cleaning the metal and it is turning the silvery and shiny color of new metal! Particularly on the shaft behind the gears of the DOHC. Overall, the engine is really smooth, really pleased with this oil! Keep up the great work!
Date published: 2016-09-29
Rated 5 out of 5 by from I use Mobil 1......Period....And Here's Why... I've had my 1998 Ford F150 with a 4.6L SOHC V-8 since new. I run only Mobil 1 5w30. Drove it 266,000 miles until it blew a head gasket. Where we tore it apart - absolutely NO WEAR - ZERO. Clean inside and no wear. Cylinder walls still had a crosshatch pattern. Crank and cam journals were void of wear and we went back with standard sized bearings. I can provide images of this engine when it was torn down. Mobil 1 for life.....FOR LIFE. Engine is now rebuilt and ready to go back in my truck. Had I taken better care of my cooling system it would never have blown the head gasket. It would have gone way beyond 300,000 miles WITHOUT A REBUILD on Mobil 1.
Date published: 2016-05-15
Rated 5 out of 5 by from If you drive Suburban/Tahoe use it If you own a Suburban or Tahoe use Mobil 1 5W-30 solely and your engine can go over 300,000 miles. Now driving my 12th Suburban and the last 3 used only Mobil 1 and the first 2 went 340,000 and 350,000 miles respectively and the engines still ran like new! Have 125,000 on current Suburban and still does not burn any oil between changes - 7500 miles and the technician smiles because the old oil looks as clean as the new oil! - and runs as smooth as the day I drove it off the show room floor. Every GM dealer carries Mobil 1, use it and you will be amazed at the result.
Date published: 2015-09-06
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