flushing/clearing oil lines... help pls

[grimr33per]

my last thread about high oil pressure seems to have died a horrible death and been ignored. i'm gonna make the assumption that my high oil pressure is caused by fouled-up oil lines (oil filter is new), and my oil loss is caused by the relief valve bleeding it all off every time it goes past 8kg/cm.

now.... whats the best method to flush/clean the oil system properly? is a regular oil flush with a hot change good enuff, or is there something more powerful to use that'll completely clean ALL the crap out of the system?

help me please as i really don't wanna pay a mechanic to do what I could do myself if I just knew what it was exactly I had to do.

[MrMeaner]

could have a faulty/stuck oil pressure bypass valve, or blocked PCV valve causing to over-pressurise the crankcase, causing excessive blowby, oil pump filter (gause thingy) could be blocked/gunked up,

but u should get someone to look at it, u dont wont to be blowing turbo seals or anything like that

i would also strongly recommend NOT! to put any of those engine flush/clean products crap in to your skyline

[JimX]

You said you were using Castrol Formula R oil - that's probably the best way to clean your oil galleries. High quality full synth oil has a high amount of detergent in it which will help clean stuff out and prevent buildup afterwards. It's possible one of the reasons you had high oil pressure was because of the grade of oil you chose (10W-60) and hopefully it should come down a bit if you drop to a lower viscosity like 5W-40.

The oil usage could be related to high oil pressure, you might have blown an oil seal in the turbo or something.