Describe the noise, click, grinding, knock?
As long as you never let the engine oil get below the crosshatch on the dipstick you are generally OK.
Having said that, conventional oils will break down if left in too long, varnish and more importantly sludge will form and CAN cause problems.
Change the oil/filter every 3,000 miles, even if you use the "house" brand at most autoparts stores, it is important to keep it changed.
Also find and repair the oil leak.
Thursday, July 16th, 2009 AT 10:41 AM