Need some help from the greats !! Puzzling question

[Rock-It Man]

Originally Posted by Slvr-camaro15

No oil , the oil on the dipstick is fine in color and texture , maybe a lil black (it’s about that time for me do the oil change ) . No other color .

You might not see any foaming on the dipstick right away. If you suspect coolant in the oil, the first place to look is on the inside of the oil fill cap.

The vibration is a troubling sign. I drove a full size GMC Jimmy with a 350cu V8 that developed a crack in the block. There were massive amounts of coolant going into the oil and the oil looked like a coffee milkshake. There was NO impact on performance. No shaking, no noise. I was cash poor at the time and drove the truck like that for maybe 50,000 miles, just adding coolant every week until I retired the old truck at about 325,000 miles.

So with vibration, something might be broken.

[ariZona28]

Originally Posted by Slvr-camaro15

What is THat and what am I looking for in the spark plugs

Had to did deep into the bowels of the 'ol roll-away box to retrieve my vintage 1980's Craftsman compression tester. On a moderately warm (not hot) engine remove all plugs, insert gauge in plug hole, disable fuel AND ignition, crank for a good 10-15 seconds. Repeat on 7 remaining cylinders. All #s should be within 5-10% of each other depending on vehicle mileage. My old school Oldsmobiles were always around 140-160 psi IF my memory serves me correctly (sometimes it doesn't!). I have yet to do this on an LS engine. Since it appears you haven't done this before grab a buddy who has. If none of your associates has ever accomplished this task then it is time to expand your friendship circle. Pizza and beer helps.

[Whoomba]