The Perinneal debate – Mineral V Synthetic Which to choose?

[siminoz]

Thanks for all the responses people. After considering these responses and asking lots of questions to lots of people I have decided finally to settle on using Rock Oil Gamma in my bike. I've based this decision mainly on the following four considerations.

1) As has been pointed out mineral oils were used without problem by these old bikes when new and are recomended for these engines even although some knowledgable engine builkders do recomend semi synthetic oils for the engines they build.

2) With the advance of technology I suspect that modern mineral oils are an "improvement" on the mineral oils that were available in the late seventies and early eighties.

3) When I used semi synthetic in my old GSX engine as mentioned it was noisier, the gearbox was notchy and uncomfortable, the clutch was prone to slipping more readily than before and I just didn't like the "feel" of the bike.

4) Finally, mineral oil tends to be cheaper than semi synthetics and my friendly local accessories retailer who can easily source Rock Oil for me and does excellent prices is just around the corner from where I live.

I suppose, as suggested also, that any oil is better than no oil and with regular changes there shouldn't be any problems even in these hot Australian summers. We will see I suppose.


gamma
mineral 4 stroke engine oil
JASO MA API SG
10W-40 & 20W-50 viscosities availab


Rock Oil Gamma is a premium quality mineral, 4
stroke engine oil meeting the exacting demands
of classic bikes and modern high performance
motorcycle engines where a mineral oil is
required. Gamma ensures maximum engine
component protection and superior resistance
to deposits and corrosion, resulting in extended
engine life and optimum performance under
the most arduous of conditions. It also passes
the crucial clutch friction test required to meet
the JASO MA specification, allowing safe,
predictable use in wet clutches.

[Madreg]

There is a good article on oils in this months Practical Sportsbike magazine or Classic Motorcycle Mechanics, cannot rememberr which one.

Regards