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View Full Version : just chanaged oil but pressure seems a bit high...



titcharoony
17-03-2008, 22:32
Just changed oil and everythings hunky dory, but the pressure seems higher than it used to be. Its about 4bar at 70mph in fifth. bit high? temps about 80...

Rich
17-03-2008, 22:36
first time i've heard anyone complain about high oil pressure!

titcharoony
17-03-2008, 22:37
not complaining

titcharoony
17-03-2008, 22:38
just wanted to kno whats normal

Rich
17-03-2008, 23:40
its a very variable figure but book figures are 3bar at 3krevs iirc (when warm obviously) usually it can be owt between 4-6k from cold (at idle) and can idle when warm at anything from 1 bar down to showing 0 on the guage. my old valver used to see about 4-5 bar max when giving it some serious stick but never had any knocking issues :)

titcharoony
17-03-2008, 23:45
well at 60mph (think thats 3k) its dead on 3 which is good.

Rich
17-03-2008, 23:52
i agree mate, seems very healthy. lots of things can affect it though like the oil filter, oil used ect. but seems good

white16valver
18-03-2008, 08:52
What oil did you use? 5w40? 10w40?

If you used a 10w50 or something then it'll be thicker when hot, therefore might give higher pressures :)

titcharoony
18-03-2008, 12:15
ten 40 i tihnk....

Oszy
18-03-2008, 14:55
bigger is better :lol:

Lunner
18-03-2008, 14:59
within reason :wink:

Purple
18-03-2008, 15:03
4 bar at 80C oil temp. running 3.5k rpm (70mph@5th gear) is perfectly normal in my Williams. Should drop a bit when the oil get to operating temp of between 90C to 100C.

Yanoo_
18-03-2008, 19:52
bigger is better :lol:

Don't say anything with your 20w60 oil ;) :)

Yanoo_
18-03-2008, 19:59
Don't worry about it mate! It's usual: the new oil has better properties than the older one. When it'll become old, the pressure will be lower too (except Edge 10w60... I love that oil :) ).