Re: my new to me '99 SL2
Synthetic oil generally will help to keep the oil usage from getting worse, if you can justify the extra cost and it is not burning a lot. It should also get you another 1-2 mpg.
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97 sl2 a/t 104 K
1989 GMC 3500 454 129 K, 1969 442 455 rat rod
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