Re: What does a "multi-weight" oil rating really m
For 2000 miles a year change the oil once per year. If you store it during winter, change it just prior to winter storage. If you drive it year round, change it after the high driving season ends, which would probably be sometime in the fall.
Good crankcase ventilation and avoiding short trips will minimize the risk and effects of condensation, and having fresh oil in the crankcase during winter storage will mean there is no acid to to possibly work away at the engine internals.
Also keep in mind that the additives in motor oil are designed to neutralize certain contaminates and prevent corrosion damage, just like antifreeze, and CI-4 oils have more of these anti-corrosion additives than modern oils designed for spark igntion engines, which is a primarly reason why I recommend them. Diesel engine environments are much more corrosive because diesel fuel has more sulfur than gasoline.
For typical vintage Corvette use, corrosion is probably more likely to deteriorte the engine over the next 30 years than wear from operation, which is why you want to use a reasonable oil change interval and use an oil that will provide maximum corrosion protection.
Duke
For 2000 miles a year change the oil once per year. If you store it during winter, change it just prior to winter storage. If you drive it year round, change it after the high driving season ends, which would probably be sometime in the fall.
Good crankcase ventilation and avoiding short trips will minimize the risk and effects of condensation, and having fresh oil in the crankcase during winter storage will mean there is no acid to to possibly work away at the engine internals.
Also keep in mind that the additives in motor oil are designed to neutralize certain contaminates and prevent corrosion damage, just like antifreeze, and CI-4 oils have more of these anti-corrosion additives than modern oils designed for spark igntion engines, which is a primarly reason why I recommend them. Diesel engine environments are much more corrosive because diesel fuel has more sulfur than gasoline.
For typical vintage Corvette use, corrosion is probably more likely to deteriorte the engine over the next 30 years than wear from operation, which is why you want to use a reasonable oil change interval and use an oil that will provide maximum corrosion protection.
Duke
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