[A horse with no name]

For what it is worth, my 2 cents; I use Mobil 1 15-50 synthetic, which for the miles I put on between late spring and early autumn is really not necessary.

FYI - $25.00 for a 5 quart jug at the Walmart in Bellingham Wa

(No leaks with synthetic at 120,000 km ->75 K miles )

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Originally Posted by Rekoob

i have a simple question about oil on my '78 sc. but im sure the answer is much more complicated

what would be the best oil i could and should put in this car where i DO NOT know the history?.
i don't know what was used in the past (full syn, part, reg)
im not a hard driver on the car, and it will be drivin mostly up in BC, canada (summers only)
i like to find a good oil and always stick with it, but i know different, and older vehicles can be picky with drastic oil changes.

oh... i have 174000 miles with one rebuild some years ago..

thanks for the help.