Re: Castrol Tection 15W-40 oil in a JD 2 cylinder

Posted by jdemaris on April 14, 2007 at 11:10:39 from (66.218.18.219):

In Reply to: Re: Castrol Tection 15W-40 oil in a JD 2 cylinder posted by Jon Hagen on April 13, 2007 at 15:26:50:

In regard to the comment - "A few years ago JD dropped the restriction of using only single weight oil in older tractors"
Where did you read that?

I suspect that many - if not most people would not know the difference if a certain oil reduced
the life of their engine by - let's say 10%, 20%, etc. I'm speaking of a collector's tractor - not
one being used daily for hard work. Years ago - when I worked for a Deere dealer - we got
hammered if an engine lasted 8000 hours instead of 10,000 - but that's a different situation.

I contacted a friend of mine who is a retired Deere engineer. Asked him a few questions to
refresh my own memory. He retired from Deere in 1994 and worked in engine-design an
testing.
He states that Deere never dropped their recommendation - to avoid - when possible -
polymer-based multi-viscosity oils in any diesel that uses conventional square-sided piston-rings.
All multi-oils use the said polymers except for the synthetics.
The issue is one of polymers burning off and leaving heavy deposits that cause pre-mature
top-ring wear. This problem was eliminated with the use of triangle-shaped Keystone rings in
the top piston-grooves.
This matches information I have from both Deere and Detroit Diesel - my newest bulletin dated
1991. I also know that some rebuild companies for Detroit Diesel 2-strokes will still void the
warranty if a multi-visc. oil is used unless it's synthetic.

Replies:

• Re: Castrol Tection 15W-40 oil in a JD 2 cylinder Jon Hagen 11:40:55 04/14/07 (2)
  • Re: Castrol Tection 15W-40 oil in a JD 2 cylinder Jon Hagen 17:24:46 04/14/07 (0)
  • Re: Castrol Tection 15W-40 oil in a JD 2 cylinder jdemaris 14:07:27 04/14/07 (0)
• Re: Castrol Tection 15W-40 oil in a JD 2 cylinder dad's88 11:18:43 04/14/07 (0)

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