Billprendy answered 7 years ago
10w40 is a really thick oil, I've personally never seen a v6 that takes that thick of an oil. Usually the top of your oil cap will tell you what weight oil the engine takes and if it doesn't than you can look it up on line or a car parts store will tell you. But if it's a consistent knock from your bottom end than it could be a rod knock
Yes, check the oil pressure with a mechanical gauge.
The bottom of my engine is knocking and I just put in 10w40 motor oil. ...my vehicle is 96 Chevrolet s10 v6 4.3L....
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