uberhahn

I switched to synthetic engine oil when I bought the truck about 20K miles ago. I've noticed that my oil level is low about a quart and a half between changes.

No leaks.

How many of you experience this? I've got 110K miles now.
No oil in coolant.

uberhahn

91TPU

its not totally uncommon to get some oil consumption on a motor with more miles on it, but a quart and a half are ridiculous. how often do u change your oil, your positive you dont have a leak?, and remember, your oil filter can hold a decent amount of oil in it, so attribute some to that.

xonetruthcrewx

its common for oil to be burned when you switch to synthetic oil on a high mileage engine that has always had regular oil in it. its blow by on the piston rings. no worries. your good to go.

AH64ID

When you change your oil do you run it for a few minutes and recheck it?

You should never let it get that low.......

I switched my 92 to synthetic at 150K, doesnt burn more than 1/4 qt per 2500 miles...

youngbuck

Try a different brand of oil. For some odd reason some engines burn certain brands more than other brands. What kind of syn oil is it?

surf4runner

i went from dino to synth blend to full synth (castrol) by 100K. the 1st syth change used a qt between changes and none inbetween changes since.

X-AWDriver

I've got 120k on mine and I go 9k between changes and it doesn't eat any oil.

mburnickas

Could be normal might not be. Depends on the oil used (aka Noack) rating. Some oils are nice and low (around 5 to 6.5) and some are high 12 to 15%