6000 rpm, 150
degree oil into the engine, 115 psi before cooler and filter, 84 psi after (31
psi diff)
6000 rpm, 180
degree oil into the engine, 105 psi before cooler and filter, 82 psi after (23
psi diff)
Test run 3- (60
micron screen, Mobile One 5w30 oil)
6000 rpm, 150
degree oil into the engine, 110 psi before cooler and filter, 83 psi after (27
psi diff)
6000 rpm, 180
degree oil into the engine, 100 psi before cooler and filter, 82 psi after (18
psi diff)
These are even
better numbers for the differential pressure, but he real good news is the
length of time it took to heat up the oil.
The only diff between today, and yesterday is the oil weight. Today, it took more than twice as long
to get the oil up to 140. I was
even running higher rpms to get it there.
Even after some full throttle running, I still never saw 200
degrees. This may be the key to my
oil temp issues.
In looking back
at my logs, I noticed that I originally
started with 10w30, but didn’t note when I changed to 15w50. I suspect it was during the rev-2
upgrade though. Can’t wait to see
if there’s a cooling improvement with the 5w-30 weight. Bet there will be.
In the bad news
department, one of my oil cooler hoses is leaking. The damn Earls fitting just decided to
seep oil out the back side of the nut, and there’s nothing I can do to stop
it. Naturally, I don’t have a
replacement. I do have a straight
fitting, and could use it, along with the 45 degree adapter that I used for
measuring oil pressure. I could use
it for oil pressure, or oil temp. I
currently monitor the temp in the pan, but this would be better, since it’s just
before the oil cooler. My main oil
temp reading is just after the cooler, so this would give a nice differential
temp across the cooler.
Having the pressure reading could allow me to know when the oil filter is
starting to get restrictive. Plenty
of uses for the adapter it seems, so I think I just talked myself into putting
on a straight fitting tomorrow.
Also helped a friend
remove the damaged outboard section of his Grumman Tiger wing. I
guess the good news is that his only damage was to a section of wing
that's easily removable for repair or
replacement.
Cheers,
Rusty