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1. 11:59 AM - Oil Filter Rotax 912ULS (John Hauck)
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| Subject: | Oil Filter Rotax 912ULS |
Hi Folks:
Just got back from the airstrip. Upgraded my oil cooler from a medium
(Rotax Large) to a large (Rotax Extra Large) on the 912ULS. During
flights out West, in recent years, I have had to keep a very close eye
on the engine oil temp gauge. At one point while flying Death Valley,
I had to reduce power to keep the engine oil temp below the red line.
Anxious to see if the money and effort was worth it or not. I am
pretty sure I will get the results I want. Maybe a little lower
engine oil temp and a little higher CHT.
Discovered something interesting during my work on the mkIII today. I
checked the oil in the tank prior to cracking any oil lines, or
turning over the engine. To my dismay, the oil level in the tank had
dropped to the lower portion of the stick out of the operational
range. Since it was full when I put the airplane away a week ago, the
only answer to that would be the oil siphoned out of the tank and into
the crank case because the anti-siphon valve in the oil filter
malfunctioned.
After I got the new cooler installed, I turned the engine over by hand
to blow the oil out of the crankcase and back into the oil tank. Next
time I checked the oil was just over the bottom of the operational
line about a quarter of an inch.
As most of you know, I use Fram TG3614 oil filters in my 912ULS. I
was a little disappointed that the anti-siphon valve failed, until I
remembered, I still had a black oil filter installed. The original
Rotax filter. I have yet to do the first oil change which is due at
25 hours. So..........my track record for my Fram TG3614 is still
100%. I have one on the bench to install before I depart for MV
Tuesday morning.
All that is left to do now is dial in prop pitch, adjust throttle
friction, rotate drag strut universals, re-rivet the left aileron
counter balance weight that for some reason decided to loosen up in
the leading edge of the aileron, and wash the carpenter bee crap and
saw dust off the wings.
Right now it is break time. Too hot to work in this 94F heat.
john h
mkIII
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