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Disappearing Oil Leak

1061 Views 3 Replies 3 Participants Last post by  obermd
In early May I took my 2012 ECO MT into AutoNation Buick GMC West in Golden, CO for an oil change. When I picked up my car the tech who worked on it showed me an oil leak down by the crankshaft cover. Today I took my car back for it's 90,000 mile service (Oil/Filter Change, Synchromesh drain/fill, Brake & Clutch DOT 3 drain/fill) and I mentioned the oil leak to them. When I picked up my car this evening I asked about it - the senior tech had put my car on a lift and could find no indication of a leak. He did find remnants of an old leak however so he cleaned up the dried oil and put a detection dye in the oil for my next oil change at 96,000 miles (my OLM drops about 10% per thousand miles and I change at 40%).

Now for my question, can oil coming up out of the dipstick area drain down and mimic a leak elsewhere? I ask because I had to replace my dipstick due to a broken lower o-ring on the dipstick and I had a thin sheen of oil all over the top of the engine on the side the oil leak was discovered. Basically, can my daily commute of 24 miles each way force enough oil up but allow it to drip down the engine block and end up under the water pump side of the engine but not result in an oil sheen on the top of the engine?
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Discussion Starter · #4 ·
Thanks Rob. I suspected but I knew someone with a lot more engine experience than I would know.
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