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<DIV><FONT size=2 face=Arial> I know I saw a few topics here related to it
.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>I tend to search topics when I get
an idea in my head , this times it's engine oil .</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>I understand the later relief and control valves.
When I rebuilt this engine , yes in 1997 I've got it. </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Broke it in using Kendall 40 weight when it was
still Kendall . It became something else or some compamy bought them and the
brand name changed , something along those lines. </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial> Until 2005/06 I used it because I had a small
supply.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial> Fast forward to 2007 if I recall and really
does it matter I used Castrol 40 weight conventional and around 09 it was
Castrol 20/50 conventional. Really have put at most 2500 miles since then using
the 20/50 . </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial> I use VDO add on gauges oil press/
temp/voltmeter , these are just because I've had them even before the rebuild so
I just have a baseline . VDO cock pit , electric. </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial> Point is I came across a post on Samba while
sitting deciding on a few parts .</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial> It was all about oil type , viscosity ,
pressure .......... does thick oil allow the oil bypass to not allow oil through
the cooler - result runs hot and depending on bearing condition thick oil may
not cool the bearing fast enough = short life. . </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial> It comes down to this for me. Can't trust the
gauges really we know this. I know I never put crap oil in it and never let it
go more than 3k between changes and I replaced both valves and
springs bypass and control , they were not stuck in the case I
rebuilt. </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial> All I know is thinner oil makes sense yet
based on my driving habits where this car is driven at most 400 miles per year
and it does get hot here I don't need freeway driving to see 175 F on my oil
temp , however that's maybe 60 days out of 365 . Most times it sits at 120 on
the 120-300 gauge . If my 80 PSI pressure gauge is close then 60PSI startup then
drops down to 45 @1000 RPM still showing 120 temp . Best I can recall I see
165-180 temp on a hot day and 30PSI 1000 RPM at times say 180 22 psi .
</FONT><FONT size=2 face=Arial></FONT></DIV>
<DIV><FONT size=2 face=Arial> </FONT></DIV>
<DIV><FONT size=2 face=Arial> Now since I chose all by my self to get
caught up in this thought process , can't say I need the zinc content required
for flat tappet lifters , not sure ,seems to run the same as it has pep wise and
I hear no bearing noise. </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial> Based on this and maybe at most between 35
and 40k on it now , lost my old note book. </FONT></DIV>
<DIV><FONT size=2 face=Arial> </FONT></DIV>
<DIV><FONT size=2 face=Arial> Should I just go to a 10/40 and maybe
Valvoline or these 15/40 shell Rotella diesel oils , not synthetic or high
milage blend , not after all this time. What I cannot answer is if oil does flow
through my cooler a little , 50% or at all. How would I even know .</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial> Not sure about 2500 rpm driving not the same
as hot and sitting running the RPM's up. Can't say I want to do that . With an
auto trans heat blowing off the convertor fins at the top may also be a factor.
</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial> Here if you dare to look down for an instant
no matter the speed you may now forget about all I just asked. </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial> JUst asking mostly about oil . Got some
Valvoline 10/40 thought i'd try it to see if I see a change and I won't see it
climbing a long grade mostly flat /slight at 45 MPH max.Pouring the
20/50 it looks pretty thin to me 10/40 might look like whole milk. Never lower
than 60 F when I start it . I tend to think stop and go here it gets hotter than
60 on the freeway 99.5% of my driving is 45 and below keep the auto in 2nd
because 45 is not often not on these surface streets.stop signs and lights and
traffic . in 3rd it downshifts to much and likes 2nd. </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial> </FONT></DIV>
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