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Originally Posted by Greenblurr93
umm, you shouldnt be burning oil like that no matter what kind you use.... sounds like you have bad piston rings or valve seals
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I agree. Adding more than 1 quart of oil every 1000 miles is considered excessive consumption. Are you actually burning the oil, or is it leaking out?
Have you pulled the spark plugs? If you are burning oil, they will be black and sooty/greasy. If they are a tan or brown colour, you are losing oil somewhere else.
If it's burning oil, thicker oil is less able to scoot past your rings or valve seals, so it burns less oil.
However, the oil thickness you put in should be determined by oil pressure, not oil burning. If your oil pressure is too low, when using 10w30, then you should step up to 10w40, and try that.
Using thicker oil will cut down on burning, but its just a band aid to cover up a more seious problem.
You might have a stuck or broken piston ring or bad valve seals.
If its leaking, thats usually an easier repair. Thicker oil is also less likely to leak past bad gaskets or oil seals, and will reduce your oil loss.