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Ford 9N, 2N & 8N Discussion Board

Modern motor oils


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Posted by Rob on May 25, 2005 at 08:33:29 from (63.245.133.111):

In Reply to: motor oil; detergent v non-detergent posted by Rob on May 25, 2005 at 06:30:05:

Other than the suspended abrasives in detergent oils and the added cost of additives, an issue with using motor oils chocked full of additives is with the gaskets and seals used on the N.
Some of the additives are not compatible with the corks gaskets and rope seals. As for synthetics, at least some oil companies expressly state that their synthetic oil is not recommended for the older engines because of the gasket and seal issues.
The N does a better job holding the straight ND oil than it does holding the stuff full of additives. It might be that the gaskets and seals just can"t hold the new stuff because it"s more slippery or that the some additives in the new stuff actually damage the cork or rope. I really don"t know.
It might be that if you can handle an increased likelihood of leaks that the benefits of the additives make it worth while.


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