Mixing Syn oil brands OK?
#1
Instructor
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Mixing Syn oil brands OK?
I bought a 5 quart container of Castrol Syn 10W-30. I only used 4 quarts on my old car. I want to "finish" the container but I'm planning to buy Mobil 1 syn 5 W -30. Is it OK to mix brands (same vis)?
#4
WDP Director of R & D
Its a federal mandate that all oils are compatible etc. I personally wouldn't mix syn oil with dyno but wouldn't have an issue mixing different brands/weight of one or the other. Done it myself.
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ulrblitzer
2G TSX (2009-2014)
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09-24-2015 07:42 PM