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Ask Mobil Archive -
HEMIs
DateQuestionAnswer
02/24/2009
Must 5W-20 be Used in HEMI MDS Engines?
Is 5W-20 still the choice grade for 5.7 HEMI MDS engines under extreme temperatures? The Owner's Manual and related TSBs all state that 5W-20 must be used whereas pre-MDS HEMIs were recommending 5W-30...
We recommend you follow the recommendation in your vehicle's owner's manual. If you are concerned about durability due to higher temperatures, then going to a higher viscosity grade would provide a be...
09/01/2007
Best Oil for a High-Performance, High-Heat Engine
Hello, I own a 2006 Dodge Charger SRT8 with the 6.1L Hemi engine. The car currently has about 3,300 miles on it. This is a car that is stored in my garage and I only drive on occasions in good weather...
We recommend you use Mobil 1 0W-40. Look at the credentials this product carries and you will quickly understand our recommendation. In addition to providing outstanding engine protection and performa...
08/30/2007
Multi-Displacement Engines and Engine Oil Viscosity
I have a new (coming up on the first 500-mile oil change) Dodge Ram 1500 with the 5.7 hemi multi-displacement engine. It says to use 5W-20 regardless of the season. I've read that I have to use 5W-20 ...
Since this is a new vehicle, you should definitely follow the OEM recommended oil viscosity and drain interval while the vehicle is still under warranty.  It is possible that the hydraulic design of a...
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