I use BP Course Plus in my Harley - have a read
of the new BP range. They are very good oils!
The Course Plus is now 25W/60 ( up from 25W/50)
and the specks exceed the Harley requirements - notice recommended for large
twins.
Whereas the lighter oil 20W/50 ( I think ) is
recommended for 4 stroke motor bike engines - no friction modifier ( i.e.
clutches).
I use the Course Plus in all my vehicles and is
readily available in all regions in Australia - including country
regions.
There’s an
interesting article titled “Special Lubes for High-Revvers” in the June issue
of Kitplanes. This is part 2… guess I missed part 1. I found their
comments about using synthetics with 100LL to be in agreement with the
comments made on the Fly Rotary group just this
week.
Mark
S.
From:
Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of WRJJRS@aol.com
Sent: Tuesday, May 10, 2005 11:39
PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Synthetic Oil
and Leaded Gasoline.
In a message dated
5/10/2005 5:41:08 PM Pacific Standard Time, ianddsl@magma.ca
writes:
Has anybody used a
quality 4 stroke motorcylce oil? They tend to provide
good gear
life performance as the transmission is often the sump. They
also
resist foaming at very high RPM. --
Ian
When I worked
for Kawasaki
they tested tons of oils, a few stood out. I don't even know if it is still
available, but Keystone 20-50 petroleum based was what they used on the
wholesale level. This was a "standard" oil that tested well, at a moderate
cost. Omega vacuum refined petroleum based "semi-synthetic" was a super
high-end 20-50. (about 4-5 bucks a quart 20 years ago) The winner was Redline
synthetic multi-grade for street or straight 40 or 50 wt. for racing.
(remember synthetic 40 wt pours more like 30 wt petro)
They did
serious testing in the lab and running engines on the dyno. One thing that
synthetic did really well was gears. Don't forget that most
"modern"motorcycles lube the transmission with the engine oil. A high film
strength is needed there. Since we are lubing many of our PSRU's with engine
oil I believe a synthetic is a good crossover oil that will work well in both.
I like redline, but it's expensive in yank dollars I can't imagine what it
goes for, or if it's even available in Oz. Motul is generally available
worldwide but is also very expensive. I think Mobile 1 is a good oil for the price. Run
redline if you're flush it's GREAT oil. If you have a separate gear reduction
I would definitely run Redline in the gearbox. They make a truly superior gear
oil.