Re: Need to ask
Well most motors run on 87 octane, They will run worse on higher octane so go with what the Manufacture says to use.
As for the oil I use the cheaper stuff, Like Penzoil, as long as it has TCW3 in it, it will be fine!!
But if the motor is new and under warranty then use the Manufacture.
Just my 2 cents worth! I am sure there will be many different opinions.
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1986 V20 
Old Fishermen never die, we just SMELL that way!!
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