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oil amount/type for a 89 gt

694 Views 1 Reply 2 Participants Last post by  GhostDog 5.0, 
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I was wondering what most people use for oil and how much, knowing that too much oil as well as too thick can be performance cutting.
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GhostDog 5.0
I use 10w30 castrol syntec part synthetic. I use 7 quarts but I have a 7quart oil pan. Stock setups use 5 quarts with filter change.
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