Hello, this is my first post here on BITOG, but I have thousands of other posts on numerous car forums. Greetings all!
The following analysis came from my 1999 Impreza RS that has a 2002 WRX EJ205 engine swap. I changed the oil to Rotella T6 Synthetic after lurking these forums after reading that Mobil 1 can wreak havoc in Subaru boxer layouts. The previous owner used Mobil 1 almost exclusively.
Most of my automotive background is with Honda/Mitsubishi/Nissan. This is my first Subaru.
Info on current setup:
Apex-i Air filter/intake (dry element - http://www.mkiv.com/techarticles/filters_test/2/ )
Fram Xtended Guard Oil Filter ( http://www.fram.com/oil-filters/xtended-guard.php )
Shell Rotella T6 5w40
Oil was changed in early February, and has about 40 dyno runs when it got Dynotuned via opensource w a "Stage2" (in the Subaru world - intake, turbo back exhaust, no cats, downpipe/uppipe/full 3" exhaust) setup. Overall, the engine has aprox 75-80k miles on it.
Currently, the car is running on the stock wrx ECU map, stock wrx up-pipe (w/ cat), stock wrx downpipe (w/ cats), stock wrx b-pipe, Pro-drive axle back. The car went back to stock to pass the California BAR inspection (it passed). I haven't put the car back to stage 2 as of yet.
The engine has 145 psi compression across the board. However, it burns through oil at an alarming rate of 1qt/800 miles or worse. No visual leaks, and there is trace oil in the intercooler/turbo tracts. I currently dont have any air-oil separators or catch cans but plan to do so soon. In bone stock form, this engine dyno'd at 200whp/202wtq on Dynojet 248c. Stock motors on that dyno usually pull 180/180 or less.
The consumption is a mystery despite the healthy compression/dyno numbers.
Thanks in advance! Any input is greatly appreciated.
The following analysis came from my 1999 Impreza RS that has a 2002 WRX EJ205 engine swap. I changed the oil to Rotella T6 Synthetic after lurking these forums after reading that Mobil 1 can wreak havoc in Subaru boxer layouts. The previous owner used Mobil 1 almost exclusively.
Info on current setup:
Apex-i Air filter/intake (dry element - http://www.mkiv.com/techarticles/filters_test/2/ )
Fram Xtended Guard Oil Filter ( http://www.fram.com/oil-filters/xtended-guard.php )
Shell Rotella T6 5w40
Oil was changed in early February, and has about 40 dyno runs when it got Dynotuned via opensource w a "Stage2" (in the Subaru world - intake, turbo back exhaust, no cats, downpipe/uppipe/full 3" exhaust) setup. Overall, the engine has aprox 75-80k miles on it.
Currently, the car is running on the stock wrx ECU map, stock wrx up-pipe (w/ cat), stock wrx downpipe (w/ cats), stock wrx b-pipe, Pro-drive axle back. The car went back to stock to pass the California BAR inspection (it passed). I haven't put the car back to stage 2 as of yet.
The engine has 145 psi compression across the board. However, it burns through oil at an alarming rate of 1qt/800 miles or worse. No visual leaks, and there is trace oil in the intercooler/turbo tracts. I currently dont have any air-oil separators or catch cans but plan to do so soon. In bone stock form, this engine dyno'd at 200whp/202wtq on Dynojet 248c. Stock motors on that dyno usually pull 180/180 or less.
The consumption is a mystery despite the healthy compression/dyno numbers.
Thanks in advance! Any input is greatly appreciated.