Rob, 25 is probably way too low, but that will depend on what RPM it
was at. You want about 10 psi per 1000 rpm. I use 15-50 Mobil one,
and the pressure is the same at the end of the race (200deg oil temp)
as it is at the start. You could have a number of problems, such as a
bad oil pump, stuck open oil pressure regulator, or something like a
spun bearing. It is strange to me that the pressure was back when
things cooled down, unless the stuck regulator got unstuck as it
cooled. I have also used Valvoline Racing 20-50 and have had no such
oil problems. I doubt that it is the oil that is the problem. What
are you using for an oil filter. Perhap the by pass opened up, or the
internal seals leaked. Some brands (Fram for one) have cardboard
inner seals that can fail. I have had not had any problems with NAPA
Gold filters, so far. Joe(B)
----- Original Message -----
From: Rob Dardano <19to1tr6@mediaone.net>
To: team <fot@autox.team.net>
Sent: Sunday, July 15, 2001 1:10 PM
Subject: Oil viscosity
> Hello Every one I would like to know what oil listers are useing
I just
> ran a qual session and my pressure went form 60-65lbs to 25 lbs I
did not pit
> right away because my oil temp. was just under 200 and water temp
was fine
> also>> I am useing AMALIE 20-50 after every thing cooled psi is
back.
> Doesn't say much for amalie thanks rob brockton ma
>
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