Anyone run 5 30 synthetic or 5 40 synthetic

Discussion in 'Ask An Owner Operator' started by 77fib77, Nov 29, 2019.

  1. 86scotty

    86scotty Road Train Member

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    No, truck has no problems, just not sure what to do otherwise. Not even sure that I really need to change anything, honestly.
     
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  3. AModelCat

    AModelCat Road Train Member

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    Call it crazy but we dumped 0W-40 in everything when I wrenched at the dealer. Believe it or not it covers a larger temperature range than 5W-40 or 15W-40.
     
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