[AT] Caution - Oil question

[Mike]

Carl,
I'm no expert, but have heard "rumors" that synthetics can cause seals to leak. I use synthetics in my vehicles, and have never found that to be the case, as I've never developed a leak after switching to synthetic oil. However,a 50 year old tractor may have different tolerances than a 2 year old car. Just my 2 cents.

Mike M

-- "carl gogol" <cgogol at twcny.rr.com> wrote:
Last winter I replaced the front main seal and used one of those fancy 
repair sleeves on the crankshaft of an AC D-14.  I am in the middle of 
trying to fit this tractor up with one of these side mount all hydraulic 
sickle bar type road mowers (that can be a another story- some day).  No 
time to work on it when the weather is good - too many chainsaw activites to 
fill my time so it hasn't been run for more than an hour until about 3 weeks 
ago.

All summer long the oil slowly leaked from the seal I replaced.  The tractor 
was used for a few hours about 3 weeks ago to pull a brush chipper from pile 
to pile and then put it away.

My question is related to a quick observation - the leak seems to have 
slowed down significantly since the use.  One more piece of info - I 
upgraded to a synthetic blend oil since it was cheap when bought and it 
seems a shame to change the oil every year with so little use.  Does a 
synthetic slow down the normal wearing in process of a seal or did I some 
how screw up this somewhat simple job?

Carl Gogol
Manlius, NY
AC One Seventy diesel
(2) AC D-14, AC 914H
Simplicity 3112 & 7116
Kubota F-2400, B 7300 


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