Engine Blowby?
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Senior User
Joined: Jun 2006
Posts: 187
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Engine Blowby?
Hey Fella's, I've got an issue on my 85 460. I've got a lot of blowby! I haven't done a compression check but how I can tell is around the oil filler cap & pcv grommet it always leaves a lot of oil after everytime I drive it. O just changed the oil to Shell Rotella T 15w-40, I was running Valvoline Max Life 10W-30. Is there any additive that I can add to the oil to help this, (short of rebuilding the engine)? It's not smoking or fouling the plugs either. Any suggestions would help?
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Joined: Apr 2004
Posts: 34,472
Likes: 2,799
There really isn't anything you can do short of a rebuild. Do the compression test. If it's still acceptable pressures and they are even, then I'd live with it. If the pressures are varied, or way low on a couple of cylinders, prepare for rebuild....
