Wet sumping and very high oil pressure

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#11

04-20-2014, 09:32 PM

Uncle G.

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Quote:

Originally Posted by tmanbuckhunter

A lot of people report leaky base gaskets, and leaky rocker box gaskets from synthetic oil. It is not any thinner than dino oil, it's just that due to the additive package, it flows better and can find places that are already leaky to begin with. Dino oil can kind of "gum up" and keep you from seeing leaks. Stick with Dino oil in these old evo's... no need for the high priced stuff.

The makers of syn oils deny this, but I remember switching a Yamaha 650 to Bel-Ray synthetic oil many years ago, and the engine began to immediately "sweat" oil through a porous spot in the engine case next to the main oil gallery to the head. This hadn't happened in 20,000 miles with conventional oil.

In that case (no pun intended), I sanded off the paint, degreased the spot and put on a layer of JB weld. That fixed the leak for good.

Sorry to digress, we now return you to the regular H-D content of this forum.

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