Old oil pressure problem but looking for advice

[Northman]

On ‎1‎/‎30‎/‎2019 at 4:07 PM, Northman said:

I had similar issues with my 2010 5.3. Burning a quart every 500 miles. Smoking at startup, low oil pressure, etc. In fact one time the oil pressure got so low it did an emergency shutdown on me. That's how bad it was. I was using Mobil 1 also.

 

What I did was I ran a quart of motor Medic in it for about 70 miles. Changed the oil then when it got a quart low I did it again. The third time I ran a pint of Sea Foam in it for about 50 miles then changed the oil. I switched to Castrol 10/30 high mileage and now 10-40. Now I can go over 1200 miles to the quart and it has virtually quit smoking. This worked for me.

Update: Started smoking again at start up after driving for an hour or so. smoke will fill the garage. Oil consumption is still acceptable though. It was a half a quart low at about 1500 miles so that's not bad. Its -20 degrees air temp and -45 wind chill so I think the cold slows oil burning a little because engine cools off quicker allowing less oil to leak into the combustion chamber through the valve guide seals.