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

Posted by jdemaris on April 13, 2007 at 14:18:05 from (66.218.18.101):

In Reply to: Castrol Tection 15W-40 oil in a JD 2 cylinder Dies posted by Big Davie on April 13, 2007 at 13:41:16:

I wouldn't use it on an older diesel - simply because - when in doubt - why take a chance?
I know it is often assumed that any new-tech lubricant has to better than older stuff - but it doesn't always work that way.
I doubt you will find anyone or anyplace to say with certitude that a polymer-based multi-viscosity diesel oil is suited for an old 720.
When I worked for Deere - the company was quite clear it did NOT want polymer-based multi-viscostiy oils in any older diesels unless absolutey necessary for severe cold-starting.
It's not supposed to be a problem with synthetic oils because they don't need the polymers to create the flexible-viscosity.
I know that Detroit Diesel advises against it for all the older 2-stroke Jimmys.
But like I said - I don't believe anyone is going to give you test data that proves the argument either way - including Deere Company.
If it were mine - I'd be using straight-grade oil or a synthetic.

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