Mobil 1™ Formula M

For vehicles requiring a 5W-40 viscosity and specific Mercedes-Benz approvals

Mobil 1™ Formula M 5W-40 is an advanced performance synthetic engine oil engineered to help prolong the life of both diesel- and gasoline-powered automobiles that require an oil that is approved against the Mercedes Benz MB-229.3 and 229.5 specifications.

Mobil 1 Formula M 5W-40 oil is made with a proprietary blend of high-performance components and synthetic base stocks.

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.

More product information

Product data sheet [PDS] • Safety data sheet [SDS] • Limited warranty • FAQs

Features and benefits

Active cleaning agents

Help reduce deposits and sludge buildup to enable long and clean engine life.

Outstanding thermal and oxidation stability

Helps reduce oil aging, allowing extended drain interval protection.

Low oil consumption

Less hydrocarbon pollution and less necessity to top up.

Excellent low-temperature capabilities

Offers quick cold-weather starting, fast protection and helps extend engine life.

High viscosity index

Excellent overall lubrication and wear protection for all driving styles and conditions, from mild to severe.

Available viscosity grades

What does this viscosity mean?

5W-40

Specifications and approvals

Mobil 1 Formula M 5W-40 has the following builder approvals:

MB-Approval 229.3
MB-Approval 229.5

Technical details

SAE Grade	5W-40
Viscosity @ 100ºC, cSt (ASTM D445)	13.2
Viscosity @ 40ºC, cSt (ASTM D445)	79
Viscosity Index	168
Sulfated Ash, wt% (ASTM D874)	0.90
HTHS Viscosity, mPa•s @ 150 ºC (ASTM D4683)	3.7
Flash Point, ºC (ASTM D92)	228
Total Base Number, mg KOH/g (ASTM D2896)	8
MRV @ -35 ºC, cP (ASTM D4684)	25,981
Density @ 15ºC kg/l (ASTM D4052)	0.85