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Car Forum / Toyota / Toyota Cars / March 2007

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Specified Oil Pressure

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Coyoteboy - 18 Mar 2007 12:34 GMT
Having re-fitted my oil pressure gauge I revistied the manual to check the
min pressure specified by Toyota.  I cant seem to find it - all I can find
is the absolute min at idle of 4.3psi. Thats REALLY low lol. I've looked
through the big green book from Toyota and they dont specify oil pressures
other than this, and certainly not at different revs. So for now I'm just
keeping an eye out that the pressures don't change. It'd be nice to find
the correct values though.

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Ray O - 18 Mar 2007 18:05 GMT
> Having re-fitted my oil pressure gauge I revistied the manual to check the
> min pressure specified by Toyota.  I cant seem to find it - all I can find
[quoted text clipped - 3 lines]
> keeping an eye out that the pressures don't change. It'd be nice to find
> the correct values though.

The only oil pressure specification I've ever seen is at idle.  The only
thing you can do is make sure oil pressure rises with engine RPM.
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Ph@Boy - 19 Mar 2007 00:58 GMT
> Having re-fitted my oil pressure gauge I revistied the manual to check the
> min pressure specified by Toyota.  I cant seem to find it - all I can find
[quoted text clipped - 3 lines]
> keeping an eye out that the pressures don't change. It'd be nice to find
> the correct values though.

You would have to check the manuals for the exact pressures but an old
"rule of thumb" is ten psi for every one thousand rpm.
Wayne - 20 Mar 2007 01:59 GMT
>Having re-fitted my oil pressure gauge I revistied the manual to check the
>min pressure specified by Toyota.  I cant seem to find it - all I can find
[quoted text clipped - 3 lines]
>keeping an eye out that the pressures don't change. It'd be nice to find
>the correct values though.

The specs for (gasp!) a 1985 Toyota 3A-C 4-cyl, taken from the Toyota
service manual, are: at idle, more than 4.3psi; at 3000rpm, 36- 71psi.
Coyoteboy - 20 Mar 2007 22:36 GMT
Wayne proclaimed to alt.autos.toyota ...

> The specs for (gasp!) a 1985 Toyota 3A-C 4-cyl, taken from the Toyota
> service manual, are: at idle, more than 4.3psi; at 3000rpm, 36- 71psi.

OOh excellent! Seems they stopped giving out that info somewhere between 85
and 90 but mine falls in line with the upper end of those so I'm less
concerned now - cheers!

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Coyoteboy - 20 Mar 2007 22:55 GMT
Coyoteboy proclaimed to alt.autos.toyota ...
> A load of rubbish <

Now im embarrassed, Id checked the chiltons manual, not the BGB. The BGB
requires the same pressures you state! Thanks again!

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