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hi,

for the past 6 weeks or so, i've had unusually high oil pressure (8+ on the gauge when cold, 4-5 when idle, back up just under 8 when stomping it). i'm also going through oil reeeaal quick. what i'm thinking is that something is causing excessive oil pressure, and the relief valve is bleeding it off (and subsequently losing oil) as a result.

i was using castrol magnatec and then formula R 10W60. Formula R 5W40 is my next oil I plan to use, but not if I've got pressure/bleed problems....

does the oil pressure relief valve bleed oil off at high pressures? and what can cause excessively high oil pressures?

also, where IS the relief valve and where does it bleed to?

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https://www.sau.com.au/forums/topic/27933-high-oil-pressure-losing-oil/
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Guest RedLineGTR

Changing to Different oils isnt to good. I used Castrol 10-60w and my oil pressure was way high..too high for my me so i changed it asap. I have used different oils and had different results with each. A good overall synthetic oil is Shell Helix Ultra 5-40w it is priced for what it is as compaired to Major Brands like Mobile 1 etc. I am currently using Shell Helix Ultra and my "general" engine temps seem to be at a good temp. I am going to be switching to Motul 8100 5w-40w at my next oil change i know from facts/specs that it is the best synthetic quality in that catagory/quality and at the price of $55 bucks its not to steep either. With both of these oils i have had "handbook" spec oil pressures which i am happy with.

In general the only two oils that i would recommend are those 2 mentioned that dont go over $60 bucks like Mobil 1 which is overpriced for what it is.

The relief vavle is located near the oil pump. NOt sure exactly in the RB (I do in teh SR). I dont think changing oils will help. Maybe you've got a munged oil filter. Change that first... and dont put the revs too high so u dont strain the pump and stuff.

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