Re: ihc-digest V6 #873

["Tom Harais" <tjhemh@domain.elided>]

Russ:

Sounds quite familiar.

My 304/Terra did the same thing - fourteen years ago when I bought it!

Still does, only worse. At hot idle, pressure falls completely to zero.

I have use 20W-50 for some time, and that helps.

A mechanic told me to put "Risoline" in it to "help the pressure". DON'T.
It cleaned up my lube system, and the pressure really went down, under all
conditions.  Two years later, on a whim, I tired some "STP Restorer". This
stuff really worked! My pressure went back to 3/4 guage at speed and takes
a while at idle to fall to zero - just like when i bought it, 70,000 miles
ago.

Do not listen to mechanics on this, unless they know IHs well. IHs are low
oil pressure vehicles. Period. If the lifters don't clatter, don't worry
about the pressure. Manual only calls for 5 PSI at idle anyway.

Tom H.

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From: John Hofstetter <hofs@domain.elided>
To: ihc@domain.elided
Subject: Re: ihc-digest V6 #873
Date: Tuesday, June 01, 1999 2:38 PM

Russ, 
For what it's worth. I wouldn't worry about it. That's not atypical
for our Scout engines. If the lifters aren't complaining loudly,
you've got lubrication. I use 5-50 synthetic oil to try and help the
oil pressure, and it wouldn't hurt for you to use the 10-40 instead of
the 10-30. 
If your gauge is mechanical, it may be taking that long for the
pressure to get up the capillary tube. 
John H.
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< From: owner-ihc-digest@domain.elided (ihc-digest)
< To: ihc-digest@domain.elided
< Subject: ihc-digest V6 #873
< Date: Tue, Jun 1, 1999, 12:09 PM
< 

< Subject: Oil pressure
< 
< IH everyone, 
<  got in last night from a beautiful weekend in the
< Guadalupe mountains in west TX. Gorgeous scenery, and
< pretty high (for Tx, 3000 foot peak, great hike).
<  Question: I changed my oil before we left Friday
< night. It was the first time I cahnged the oil in my
< Scout (finally hit 2500 miles, figured I'd do it
< before the long trip). 
<   I put in 10W-30. My oil pressure is now doing funny
< things. When cold the pressure will take a while (10
< sec. or so) to come up to around 45 on the
< after-market mechanical gauge (dash one doesn't work).
< Once it's warm, at idle the pressure drops to <10, and
< at highway speeds (2600 rpm's) it will only reach
< 30-35.
<   I am thinking I should replace the 10-30 with 10-40,
< but I am also concerned with the length of time it
< takes to build pressure when cold. Should I
< rebuild/buy a new oil pump? Can this be done
< 'in-truck'? i.e. without pulling the motor?
<   Any help and advice welcome!!
< TIA,
< 
< ===
< Russ D.
< '73 Scout II 304