hey ..
just recently my car started to smoke .( blueish).. but at times it smokes alot more .. when at idle ... so i did a oil change to day and it seems like it helped a bit.
but one time at idle tons of smoke came out ..
what you think it could be ? i was thinking maybe the valve seals. compression is like 150-160 for all 4 ..

 

compression seems kind of low, though that doesn't matter as long as it's consistent across the cylinders. it's probably the seals in your turbo. an oil change wouldn't help the problem, except it might slow it a bit if you used a thicker oil. You either need to get a bigger feed/return or rebuild the turbo (maybe both).

 

hrmm thanks for the suggestion .. luckily i have an extra turbo ..
ummm ima using 20w 50 already .. should i try them stop smoke additives ?