I usually go to walmart but 8 months ago walmart no longer carry the oil I use, which is Mobil1 0W-40.THANKS for the heads up. WalMart has the 5qt syn.for around $20.00 from time to time. I bought 2 last time. I bought the K&N on eBay got a good price on them also.:cheers:
GM recommends to change the oil at least once a year, and I do agree because you will eventually will have sludge build up and plus oil break down after getting expose engine operating temp.i usually do all my work but there is a dealer near me that charges 49.95 to change the oil in my C5Z (7 qts) with a AC filter i figure id have that in the parts and why get dirty? i do the C5Z every spring i avg about 4k miles a year, my 05 C6 still only has 291 miles so ive never changed it. I might do it in a year or two.
I think GM is thinking about cars driven almost daily but very short trips, accumulating very few miles in a lot of drive cycles. If a Corvette is parked for long periods of time and has few drive cycles, the Mobil1 should be good for several years.GM recommends to change the oil at least once a year, and I do agree because you will eventually will have sludge build up and plus oil break down after getting expose engine operating temp.