Oil going missing = air/oil separator time?

[MrStabby]

Oil going missing = air/oil separator time?

I notice that when running the engine hard its now using some oil, but there's no smoke, and i cant see any oil leaks. I would have expected to see a little blue smoke if oil was getting consumed - can the engine be burning oil if there's no smoke? Should i get a catch can/air oil separator?

[R.3.2.G.T.R]

you could check your intake and intercooler pipes for oil build up to confirm if there's blow by

[KiwiRS4T]

To see if its getting past the rings build up some speed and then lift off for a few seconds and then accelerate - a puff of smoke at this point suggests you are burning it

[-S-]

Black puffs = ok ?

[MrStabby]

7 hours ago, -S- said:

Black puffs = ok ?

AFAIK black = fuel (rich), blue/white = oil.

[-S-]

Then id rather black then white i guess. ..

[CEF33Y]

17 hours ago, KiwiRS4T said:

To see if its getting past the rings build up some speed and then lift off for a few seconds and then accelerate - a puff of smoke at this point suggests you are burning it

I always thought this tested worn valve stem seals, i.e, engine under vacume, then WOT and if it puffs blue smoke, valve stem seals are on way out.

[KiwiRS4T]

Could be either - next step is leakdown test.

[MrStabby]

On 12/14/2016 at 6:29 PM, KiwiRS4T said:

To see if its getting past the rings build up some speed and then lift off for a few seconds and then accelerate - a puff of smoke at this point suggests you are burning it

Tried it - no smoke.

[DCIEVE]

A previous engine of mine used a little oil but didn't produce any smoke at all. Leak down was in the high teens. If there's no oil in the pcv system just keep it topped up. Though a catch can or air oil separator is probably a good idea on any rb.