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Motor Oil Changing -Reply


I have attached some names and equipment that might help you.

Our agency has recently implemented a testing program and extended
oil change process to 6,000 mile intervals.  We have also installed  a
couple of TF Purifiner filters. (most of our vehicles have conversion kits
for propane,  limiting space to add more equipment under the hood.)

Additionally, we are using API/SAE spec rerefined oil in all of our

Brian Noble
Workplace Recycling Specialist
P.O. Box 13087  MC-114
Austin, TX 78711-3087
512-239-6780  fax:  512-239-6763

>>> "Robert Gamble (412) 442-4062"
<GAMBLE.ROBERT@a1.pader.gov> 05/06/98 02:11pm >>>
A water authority with a fleet of 125 vehicles is looking 
for information on cost effective alternatives to changing
motor oil on a time/mileage basis.  I have heard that there
are labs that will analyze oils for this purpose but that it
is not cost effective for vehicles smaller than locomotives.  
Is this true and/or are there vendors of materials for on-site

A protocol for simple indicator tests of critical contaminants
could be a means to significantly extending the life of the 
lubricants without risk to the machinery. The appropriate 
simplified test methods could give a fleet manager the ability 
to reduce waste and better protect the equipment.
It appears that motor oil, engine, and filtration technology 
has progressed without influence on the auto manufacturers 
recommended oil change intervals.  What other product do we 
so routinely dispose of without any real indication that its
performance has diminished?
Any information appreciated.

Bob Gamble