[StarfireIV]

I have heard of this happening on Milwaukee bikes more than once. It seems the penetrating capabilities of synthetic oil loosen EVERYTHING up real well. As a result, your bike may be running more smoothly and be far better lubricated, but it will sound like someone shaking a tool box and possibly wind up proving that those new oil gaskets H-D has come up with can still be bypassed.

[JoeSixPack1]

The biggest benefit of synthetic is 'evenly sized gobules' that fill the surface defects of the cyl walls and anything else it slams into thus reducing friction and allowing an air cooled engine a little more survivability in 110degree summer traffic. But good old 60 weight HD should do the trick for me. We'll see.

<|:-)~~

[dennisw]

I have heard of this happening on Milwaukee bikes more than once. It seems the penetrating capabilities of synthetic oil loosen EVERYTHING up real well. As a result, your bike may be running more smoothly and be far better lubricated, but it will sound like someone shaking a tool box and possibly wind up proving that those new oil gaskets H-D has come up with can still be bypassed.

 

Can this happen in an automobile? Year 2000 Mercury Marquis. I changed it's five quarts oil with just one of them synthetic oil plus added some Slick 50.