oil recommendation for 1986 coupe
08-20-2009, 12:23 AM
#21
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St. Jude '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18-‘19-'20-'21-'22-'23-'24
And remember this is not an exotic foreign car.
It's an American made Corvette that shares many conventional
wisdom regarding lubricants and maintenance practices.
Nice find. Hope you drive it.
Your probably going to need to read alot on this forum.
08-20-2009, 12:30 AM
#22
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St. Jude Donor '05
Just about any conventional oil. If its a flat tappet Summit sells some new oil with a bunch of the zinc/ZDDP or whatever it is those motors seem to like. Just remember it isnt the best thing for your cats.
08-20-2009, 12:31 AM
#23
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i recently purchased a 1986 coupe. it has under 6,500 miles on it but i do not have any service records or owner's manual for it. i want to change the oil but i do not know what type or viscosity to use. i am looking for any oil recommendations as well as any other maintenance recommendations that i should do at this point. thanks in advance.
08-20-2009, 10:31 AM
#26
Still have the original cat on my 1985, seems fine to me. So since my 1985 was new up untill the reduced ZDDP, the oil off the shelf had the ZDDP had no effect on my 85's cat. Shell Rotella can be bought in 10W30.
Last edited by 70ZZ3 96LT4; 08-20-2009 at 10:34 AM.
08-20-2009, 10:47 AM
#27
Tech Contributor
Great looking ride, You need to drive it, and to enjoy your purchase, I have a 87 C4, with 12,000 miles, I really enjoy my Vette, I use a synthetic oil, Castro 5w30, with a K&N oil filter.
08-20-2009, 10:59 AM
#28
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St. Jude Donor '05
My 1985 orignal engine is still untouched with 102,000. Runs really great and with the reduced ZDDP in the usual shelf oil to protect the newer roller lifter new cars to protect the cats in making them last longer, I switched to Shell Rotella because of the ZDDP protection for my 1985's cam and lifters.
Still have the original cat on my 1985, seems fine to me. So since my 1985 was new up untill the reduced ZDDP, the oil off the shelf had the ZDDP had no effect on my 85's cat. Shell Rotella can be bought in 10W30.
Still have the original cat on my 1985, seems fine to me. So since my 1985 was new up untill the reduced ZDDP, the oil off the shelf had the ZDDP had no effect on my 85's cat. Shell Rotella can be bought in 10W30.
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