[AT] Synthetic Oil

[Stephen Offiler]

I run oils labeled "Motorcycle Oil" in all of my small gasoline engines.
These oils are the older SF/SG service rating, which has signficantly more
ZDDP additive than the most modern oils (service rating SN).  ZDDP is an
extreme-pressure sliding-friction additive that was removed because it
clogs catalytic converters.  There are certain motorcycles, for example BMW
boxer twins, that require SF/SG and they will wear cam lobes more rapidly
if modern oil is used.  Typically found in 10-30, 10-40, and 20-50.  I use
10-40 in everything but if it gets really cold the 10-30 would be a better
choice.  As for synthetic, probably no reason for it.  Synthetic flows
better at extremely cold temperatures (like for example -10F)  and resists
breakdown at extremely hot temperatures (like for example in small
turbocharged engines).

SO


On Sun, Nov 13, 2016 at 5:40 AM, Steve W. <swilliams268 at frontier.com> wrote:

> Dick Day wrote:
> > Dave, as you can tell, I know nothing about motor oils.  The little bit
> > that I've read and heard, leads me to believe that synthetic oil is
> better
> > for the engines.  I am currently using synthetic in the Husqvarna/Briggs
> > because the dealer I ordered it from suggested that when I did the 5-hour
> > oil change that I replace it with synthetic.
> >
> > Is there a reason to not use it?
> >
> > Thanks
>
> If you do regular oil changes conventional oils are fine. I run
> conventional 10W-30 in most of the small engines, I run 15w-40 in the
> diesel.
>
> I run synthetic in both generators because it seems to work better when
> very cold.
>
>
> --
> Steve W.
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