Excuse me, but, ever heard of break in period? Or is this a thing out of my
past?
Cruising at "sustained high speeds" for 85 miles? Accelerating after seeing your
oil pressure is 0? Hey, just get in and drive the thing, right? If it doesn't
work, you can always blame the guy who rebuilt it.
Cruising at highway speeds likely created higher pressure, and with new seals, a
good bit of your oil left the premises. When you stopped, what was left in the
sump sloshed forward and didn't get picked up and the pressure went to zero
until
the oil dripped back. A quart and a half down will do that.
IMHO, you should have kept the speeds down for the first 500 miles, you should
have checked the dipstick at the first sign of reduced pressure. Personally, I
use single grade 30w if the rebuild is done in moderate temperatures, then
switch
to 20w50 after 500 miles with a new filter. Check your undercarriage, you will
probably find a nice coat of 10w30 all the way back.
Nomex on, but not really needed.
David Lynes for what its worth
73 Midget
78 MGB
89 BroncoII
84 ChevyVan
83 Volvo
90 Tempo
FlynShoot@aol.com wrote:
> I bought a fresh rebuilt 1969 engine from a reputable person who also
> installed it. He also added an oil cooler. I always ran 20W50 in my old
> engine but he reccomended 10W30 for the first 500 miles on the fresh rebuild.
>
> I picked the car up and the engine pulled like a freight train. The oil
> pressure was at 50lbs and I made my way home. I got about 25 miles from where
> I bought the engine and the pressure dropped to just above 25lbs at 70MPH. It
> stayed at this level for the next 60 miles. When I came to a stop at the
> exit, the pressure was just above 0lbs. When I accelerated it went back to
> 50lbs and stayed there while I ran 70mph until the next exit. It then dropped
> back to near zero.
>
> The car never ran hot and no unusual engine noises were heard.
>
> Any ideas on the cause and a remedy? Could it be the 10W30 is just not heavy
> enough for sustained high speeds (60-80mph)? Any help would be appreciated.
>
> Thanx.
>
> Flynshoot
> Flynshoot@aol.com
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