oil additives, was An oily question (little long)

[dardal@xxxxxxxxxxxxxxx]

Oil companies engineer their additive packages carefully.  Adding another 
additive in there can upset the additive balance.  My suggestion is DO NOT use 
those things.  They will most likely do nothing (at best) or damage at worse.  
If you really want to use the best for your engine, just use a very well 
engineered oil (like a synthetic).  Exceptions regarding very old engines still 
apply of course.

D^2, a mechanical engineer that knows a few things about engine lubrication...

Quoting david utecht <stealthloader@xxxxxxxxxxxx>:


> 
>    I think it's safe to say that some engines will react well to these
> additives and others wont, why I don't know but your story is not the only
> one I have heard or experienced with friends.  It all comes down to three
> things, how well the engine was taken care of over time what oil was used
> and how often it was changed.  After my fathers experience and my own with
> QuakerState and Penzoil you couldn't give a bottle of either one, personally
> I'd rather walk than use them, but that's me.
>