tdbjork(at)gmail.com
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 Posted: Sun Jan 08, 2012 7:03 am Post subject: Kolb-List Digest: 4 Msgs - 01/07/12 |
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Time: 06:16:46 PM PST US
Subject: Getting off the Pennzoil Air Cooled habit
From: Richard Girard <aslsa.rng(at)gmail.com (aslsa.rng(at)gmail.com)>
Shell, which owns the Pennzoil brand, has discontinued making Pennzoil Air
Cooled two cycle oil and, according to Shell engineers, the API-TC additive
package in Air Cooled is incompatible with the TCW-3 additive package found
in most of the two cycle oils on the store shelves these days. The
incompatibility is such that one causes the other to congeal. If you premix
don't sweat it, the dilution of the oil in the gasoline takes care of the
difference, but if your Rotax engine has an oil injection pump you have to
make a clean change over.
Here's a simple way to do it. Empty the oil tank, remove it from its mount
with the lines up to the pump and clean it and the line with some clean
gas, Use the gas you cleaned with and mix a gallon or two of premix. Put
the premix in your fuel tank. Remount and reconnect the oil tank and lines,
fill it half way with clean gas. Start the engine and warm it up to
operating temps, shut down. Drain the gas from the oil tank and fill with
your new favorite oil (I went with Pennzoil Marine Full Synthetic, because
I can almost always get it at the local Wally's in gallons). Drain the
float bowl(s) of your carb(s). Start the engine and bring to operating
temps again (I'm extra cautious about the tiny amount of gas left in the
pump and want to make sure the engine always has oil). Fill your fuel tank
with fresh gas and go fly. The whole process takes about thirty minutes
start to finish.
Rick Girard
--
Zulu Delta
Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
Hi Richard, I just read your post on the Kolb list about how to switch from one oil to another if you have an oil-injection system. And I agree with you 110%, but the reason you would go through this procedure is to make sure the combination of the two oils do not jell together and cause no oil to flow and therefor starving the engine of oil and probably doing a lot of damage to it. So what if you took an small sample, say a shot full, of the oil you are now using and one shot of the proposed oil that you intend to use,, mix them together,, let them set for 24 hrs. or even a week and if they jell do your procedure,, and if they don't,, mix em?
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Tim Bjork
Firestar 11 N2552A
[quote][b]
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