I have a Chevy Prizm and its engine rattles when the oil level is low. I have found that one quart more than recommended makes the engine silent and the gas mileage becomes better as well. I have to add on one quart every month or every other month. When the rattling begins I add the one quart of oil. I use ordinary cooking oil, canola oil. The best motor oils are made from vegetable oil anyway. And instead of the standard air filter I use a cut out of washable in-house washable, reusable air conditioning filter material. The better air flow increases engine power and gas mileage. Plus, I never have to replace it. Crickets and such are kept out of the engine. I must have saved hundreds of dollars by now.
This was posted on a another site. Would you follow his advice?
This was posted on a another site. Would you follow his advice?