400 c I with a c . 60,000 original miles not rebuilt just bought car need to change oil,what type should I use?
10-40 will work fine, if you want you can use 10-40 synthetic oil....I'm sure like me and my old car you'll being changing your oil frequently so no need to use the synthetic oil
10-40 should be good but you might want to stay away from full synthetic as some say it can cause problems with an old engine.
BTW - Nice choice in cars!
gm A body ...put in valvoline racing 20-50w..... !!!!!!
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