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Jim, the filter removes the larger particles from the oil, but not the
acids that form during combustion. I've had a filter for about 20
years, but I change the oil every 25 hours and cut the filter open and
inspect the filter paper each time.
Syd
James B. Brennan wrote:
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just looking for a light casual poll on oil changing -
as I get it, "convention wisdom" is 25 hours w/o filter and 50 hours
w/ filter.....
but if you read Vissers' Voice in AvWeb (and I respect this fellow - a
career av. petroleum engineer with Shell, now retired, with whom I
have conversed), I recall him recommending 25 hours filter or not [if
my memory is working]. I added a filter to my C-85 about 20 hours
ago. All tach hours by the way - any comments about tach vs. Hobbs
timing to kick in as well??
So, what you y'all think?
Jim B
...I guess I'm leaning for between 25 to 50 as the situation and
season feels like -e.g. I'm contemplating OSH, so I figured I'd run it
up until into July and then change a couple weeks before, and see
where I was after. Kind of like I do with my cars - try to balance
common sense with recommendations.
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