BG> I use a Frantz Oil Filter here, and only ever replace the
 BG> dunny-roll cartdridge, and about 500ml of oil, each time. I
 BG> believe you though. 

 BL>   I've been tempted to do this myself, but I usually chicken out and
 BL> change the oil every 6 months. I was told by a chemical engineer who
 BL> reprocessed sump oil that the filtered oil is actually better than the
 BL> original. The short chains and impurities break down and get filtered
 BL> out.

the only problem is the build up of corrosive condensates if you only do
short/slow trips. if you keep a motor running at it's optimum all the time,
then the oil can last a very long time. i read about the pommy police
motorway patrol cars, running 160000km in a year with, i think just 1 oil
change, but they were running at about 100kph 23 hours a day, never got
cold.

                    keith
@EOT:

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