Originally Posted By: Kruse
Originally Posted By: 2015_PSD
How long of an OCI are you planning?
3-5K = Extra Guard
5-10K = Tough Guard
10K++ = Ultra Guard
Be careful recommending that mileage. The stock '79 Corvette uses a carburetor, not fuel injection.
I know, but the oil filters are good for that OCI, carburetor notwithstanding--the oil is another matter (UOA is needed at some point), but at 12 hours per year an Ultra would last 5 years or more.