ikearu

iTrader: (2)

I have a 260,000 mile EJ25D and I am trying to figure out where my oil is getting consumed so I think I fixed all my leaks I did a uv dye check didn't see anything recently. Also I have not touched the Head Gaskets at all and did a coolant flush recently no indications of HG leak no oil in coolant either. Also no smoke out of the tail pipe or smell of oil. But I do see at times oil coming out and appearing in the pcv hose which I did replace recently. So I am wondering what else it could be or is it just the nature of the engine just burning oil? FYI I use anywhere from .5 - 1 qt of oil each month.

Holdenian

iTrader: (2)

Have you checked cam seals and valve covers?

ikearu

iTrader: (2)

I did the valve covers already got the rear main seal and air oil sep plate while getting a clutch changed. Didn't see any leaks coming out of the timing bet cover.

oaklandish_WRX

iTrader: (10)

Oil/month not very telling; oil/thou miles, then we can be true keyboard mechanics.

And what oil, brand and grade you using? Driving style?

Edit: saw the miles on her: do compression and leak down first. Rings or valve seals gone? When it's warmed and idling take the oil fill cap off: of there's raw exhaust, rings are bye bye. "Air" out the filler tube is ok.

ikearu

iTrader: (2)

Sorry more like every 1,200 - 1,500 a month or so. I am doing a compression test. I used amsoil for some time and it seems to burn more than Pennzoil I ususually a few pulls but mostly normal driving 3k shifts. With Pennzoil pure plus I did like under a quart after using it at about 2,700 miles. So its a mystery.

oaklandish_WRX

iTrader: (10)

She's prolly just tired... 0.5-1 qt./12-1500 is not tragic, IMHO, esp at 260K. Think of it as an ongoing oil change!

Try the high mileage, like QS defy, Valvoline synbelnd, pennz HM, and try a 40 grade in the HM oils, or mix xW30 and xW40 in 50:50 ratio to make ~35 grade. May help.

Did you change the PCV, or just check the hose?

ikearu

iTrader: (2)

Yeah I already changed the pcv hoses and the pcv already. So im thinking of just using rotella or valvoline high mileage.

oaklandish_WRX

iTrader: (10)

Both great oils, but given consumption likely down the tail pipe, the Phosphorous(?) in rotella might kill your cat(s); try the 10W40 Valvo HM.

ikearu

iTrader: (2)

Yeah that's true I should avoid rotella. Hahaha I might have gotten a p420 once but it went away could have been due to rotella but maybe not.... Yeah I should just go with 10w-40 valvoline or OE amsoil (with the annual membership its not too expensive at all). Also I am going to put in a catch can just to keep track of how much oil is blowing by and prevent oil from getting burned in the cylinders.