Oil Pressure
Oil Pressure
Author
Discussion

repcom

Original Poster:

480 posts

270 months

Saturday 16th September 2006
quotequote all
Evening Gents

Can anyone let me know what oil presssure I can expect to see in a 400 when warm?

Thanks in advance.

peter miller

196 posts

281 months

Sunday 17th September 2006
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There are things to take into account when considering acceptable oil pressure. The gauges and senders can be woefully inaccurate, also the viscocity, age and quality of your oil will also effect the pressure. But a guidline of 12psi to 25psi on idle when hot and 25psi and above driving when hot should be ok, maybe a little lower if it is the older pre serpentine motor. But more importantly a sudden change from your usual pressures should be taken seriously, especially if the oil warning light comes on as well.

Edited by peter miller on Sunday 17th September 12:16


Edited by peter miller on Sunday 17th September 12:17

repcom

Original Poster:

480 posts

270 months

Sunday 17th September 2006
quotequote all
Thanks

simpo two

92,727 posts

294 months

Sunday 17th September 2006
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If you're running Mobil 1, any oil pressure shoud be regarded as a miracle ;-) On tick-over when hot, zero indicated psi is not unusual...

I use Castrol RS, albeit in a 500, and get substantially better oil pressure as a result, but even so there are big differences between a hot and cold engine, and high and low revs.

repcom

Original Poster:

480 posts

270 months

Monday 18th September 2006
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That's very interesting, so different to what I am used to in my Taimar which has 20k on a rebuilt engine where you can idle at 40psi warm (taking into accouunt gauges, etc). Anyway I'm going ahead and buying the 400 I,ve seen, hopefully I will have her within a few days. Thanks for your help and speak again.

Toffer

1,528 posts

290 months

Monday 18th September 2006
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simpo two said:
If you're running Mobil 1, any oil pressure shoud be regarded as a miracle ;-) On tick-over when hot, zero indicated psi is not unusual...

I use Castrol RS, albeit in a 500, and get substantially better oil pressure as a result, but even so there are big differences between a hot and cold engine, and high and low revs.


I agree with Simpo's experience with MOBIL 1 and switched to SHELL fully synthetic' as a result, the oil presure remains higher under all conditions...

repcom

Original Poster:

480 posts

270 months

Monday 18th September 2006
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I've heard that the Serp engine runs lowest of all, anyone know why this is?

shpub

8,507 posts

301 months

Tuesday 19th September 2006
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repcom said:
I've heard that the Serp engine runs lowest of all, anyone know why this is?

Actually it has slightly higher pressure because of the different oil pump.