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Mobil 1™ FS

Mobil 1™ FS 0W-40 is rated 4.9 out of 5 by 27.
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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
    MRV at -40ºC, cP (ASTM D4684) 21600
    Sulfated Ash, wt% (ASTM D874)
    1.34
    Phosphorous, wt% (ASTM D4981)
    0.1
    HTHS Viscosity, mPa•s @ 150ºC (ASTM D4683)     3.6
    Total Base Number (ASTM D2896) 12.6
    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


  • 5W-50

    Specifications and approvals

    Mobil 1 FS X2 5W-50 meets or exceeds the requirements of:

    • API SN, SM, SL, SJ

    Mobil 1 FS X2 5W-50 has the following builder approvals:

    • PORSCHE A40
    • MB-Approval 229.3
    • MB-Approval 229.1

    According to ExxonMobil, Mobil 1 FS X2 5W-50 is of the following quality level:

    • API CF
    • ACEA A3/B3, A3/B4

    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
    Phosphorous, wt% (ASTM D4951) 0.1
    Flash Point, ºC (ASTM D92) 232
    Pour Point, ºC -42
    Density @ 15ºC g/ml, (ASTM D4052) 0.8499
    Total Base Number (ASTM D2896) 12.6
    MRV at -35ºC, cP (ASTM D4684) 24800
    HTHS Viscosity, mPa•s @ 150ºC (ASTM D4683) 4.4

    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 Great for my Porsche 911 ! I use this oil as my summer oil and alternate between the 5w50 and the 0w40 for Summer and Winter respectively. Both are Porsche A40 approved oils and I like the extra protection for the summer months and when I go to the track. The winters are pretty mild here in NC so I will probably wind up just using the 5W50 year round once I deplete my current supply of 0w40. The 5W50 is hard to find and NAPA Auto Parts is about the only place I can get it on fairly short notice. I just call ahead and they get it in for me. I only wish this oil came in the convenient 5qt jugs here in the US.
Date published: 2016-03-03
Rated 5 out of 5 by from I have use Mobil1 since 1986 in my Volvo engine and it is the only oil that i can accept to my car. Under oil cap and under valve cover, i can see the very clean, very shine engine. No any sludge, and no dirty. Engine is clean like new. My engine have more than 372000 miles behind, and it still works very well. No leaks, no problems with valves, no emission problems. Even when cold start, engine does not sound bad. So this is oil that i can trust, every day, cold or hot temprature.
Date published: 2016-08-12
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