Quote:
Originally Posted by Xhifer
I just turned 150k miles and it is burning very little oil. About half a quart every 2-3k miles. I'm using pennzoil 5w30 fully sync
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Mine burned lots of oil, about 2.3 to a full quart per 1000 miles. I had to check it every couple hundred miles to avoid losing too much. Only a half quart between the top and bottom dipstick marks on these cars, FYI.
A cylinder head job reduced it somewhat. Then I noticed the tranny housing was all covered in slimy oil on the outside. Aha moment. Oil likely leaking out the rear main seal. So I started using Barr's rear main seal leak remedy/sealer. It's very thick stuff, kinda like the old "Motor Honey". I'm now running 15W-40 Rotella, with the Barr's stuff and right now about 10 oz. Marvel Mystery Oil (MMO) also in the mix. Oil consumption is now reduced to a much more reasonable amount, maybe 4 oz in the last 600 miles. Getting over 50 mpg too, so the thickish oil isn't keeping me from getting good mpg.
For one oil change I tried the less expensive Barr's oil seal treatment in the oil. Not "rear main seal", a general oil seal treatment. Not helpful in my car's case. Went back to the "Rear Main Seal" treatment and was helped again.