New Penrite Oil

Don Abbondio Posts : 6080 Join date : 2014-03-13 Age : 69

Penrite are now recommending MC-4ST 10W-60 for our bikes. Pete any thoughts?

GRiSO Capo Posts : 10413 Join date : 2013-05-29 Age : 67

As opposed to ten tenths premium 10? Really it probably won't matter as long as it's a full ester synth. I'll check the spec.

Pete

GRiSO Capo Posts : 10046 Join date : 2013-09-30

Not for us. It's for shared oil, wet clutch engines.

Stick with 10-tenths.

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Don Abbondio Posts : 6080 Join date : 2014-03-13 Age : 69

My engine oil gets to my clutch - well a teesy weensy bit - probably a rear seal. Come to think of it, I haven't seen this for a long time, so it must have been the split oil condensor I suffered in May last year, as the culprit.

GRiSO Capo Posts : 1471 Join date : 2015-01-04 Age : 63

I think they are BOTH suitable for shared multi-plate clutch use. It doesn't matter if you use them in normal engine use; in fact oils for wet clutches generally don't mechanically shear down (viscosity breakdown due to polymer getting chopped !) as much anyway

Grignapoco Posts : 135 Join date : 2016-11-26 Age : 55

Jealus

Wish I could get the 10-tenhs, its high zinc would be nice for my 1100 tappets...

GRiSO Capo Posts : 1722 Join date : 2014-07-03

^^^^^^

Ditto.

Thought I'd posted this before here, but can't find it. Apologies if double tap.

I inquired about Penrite 10 Tenths Premium 10-10/60 with Penrite in Oz and U.S. distributor. Got this:

"Unfortunately we don't stock the Penrite 10 Tenths. We only supply some of there [sic] products. Whatever we have listed is what we stock.

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Thank you,

Restoration Supply Company
order desk 800-306-7008
office 760-741-4014
fax 760-739-8843
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Not there.

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Bill

GRiSO Capo Posts : 10046 Join date : 2013-09-30

The cynic in me says the MC-4ST is just 10-Tenths repackaged and price hiked.

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Don Abbondio Posts : 6080 Join date : 2014-03-13 Age : 69

Gotta love cynicism...

The world needs balance!

GRiSO Capo Posts : 1471 Join date : 2015-01-04 Age : 63

You aren't even being cynical - if you compare the viscometrics & elemental analysis you can see they are down to identical Base number, Zn, KV & CCS visosity so can not be a coincidence ! . That means they used exactly the same additive package at the same treat rate and exactly the same baseoil (same blends using same engine & test results) ; just a different volume & packaging. Not sure why they left the density & Calcium level off the MC oil but with same base number it has to be using same type/treat of 300 TBN overbased Calcium Carbonate detergent....Castrol & others are equally sneaky with packing MC oil at smaller volumes and higher prices (because we're special idiots they can rip off)

Don Abbondio Posts : 6080 Join date : 2014-03-13 Age : 69

So 10 Tenths for me - none of that fancy shmancy motorsickle oil. I fart in their general direction...

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