Quote:
Originally Posted by 88*mr2
well i know its not leaking i have checked so my guage is bad or its burining any guage good?
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I'm not sure I understand your question. If you see bluish smoke coming from the tailpipe, it's burning oil. If you have zero leaks (park with the back half of the car on top of a refrigerator box, let it idle 20 mins and then sit over night to make sure) but you are still more than 1/2 quart low after 3 months, you're burning some oil. Burning oil means ineffective rings, leaky valve seats, or you're somehow sucking oil up through your pcv (I had a Ford Escort do this, badly). With burning oil, you change the PCV valve first, then compression test dry vs. wet to check the rings. If neither of those reveals the issue, go ahead and replace the valve seals.
Oil pressure going low is a completely separate issue, unless you burn so much oil that the oil pump pickup is sucking air (meaning you're 2-3 quarts low). My oil pressure gauge reads just over 1/2 when it's cold, right at 1/2 at 3,000 rpm and hot, and just under 1/4 at idle when it's hot. Which is a little on the low side, (to be expected with 225k miles) so I run 20w50 and check my oil every time I fill the gas tank.