synthetic oil?
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Junior Member
Joined: Jan 2007
Posts: 16
Likes: 0
From: Michigan
Car: 86 iroc z
Engine: 305 tpi
Transmission: 700r4
Axle/Gears: 3.42:1
synthetic oil?
When i bought my car the guy before me put royal purple in it and said if you can put synthetic oil in it but if you go back to regular oil that it is not good on the motor is this true? I have been putting the royal purple in i just was wondering if it would screw up my engine if i put regular oil in it
Supreme Member
iTrader: (5)
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: synthetic oil?
no, but since it's running good on synthetic, you might as well keep running synthetic as it lasts longer and works better.
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