M1 Viscosity blending
Hello Don V,
there is not a problem in mixing Mobil 1 viscosities. A viscosity calculator can be used to proportionally blend the required viscosity very accurately
However the two you mention are very different animals as the 5w-40 (T&SUV) (Delvac 1 5w-40 or M1 Turbo diesel Truck 5w-40) isa Group 4/5 blend and a great product. Mobil 1 0w-40 is a very similar product to the T&SUV 5w-40
Mobil 1 15w-50 is not a Porsche Approved viscosity
This is my first post in this Forum having sold the last of my 928 S4 and purchased a Boxster
I hope this helps
Regards
Doug
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