I just read on-line that 'SJ' rated oil should be avoided in a
motorcycle due to the friction modifier that is added because that
spec requires the removal of zinc as a wear reducing agent from the
oil. Well then, looks to me like all the GTX oils are suspect if that
is the case, not just the lighter 5W- and 10W- weights. I doubt
seriously if you run GTX in a KLR that you are going to experience
clutch slippage unless it is due to a binding clutch cable or that
nitrous kit you just retrofitted to it. I also hit the Mobil 1 site,
and see they show a motorcycle based Mobil 1 oil that, you guessed
it, conforms to 'SG' and 'SH', but not 'SJ'. So rider beware, if you
run GTX and your clutch slips, stop using it, and if not, ride happy!
and always, ride safe!
Larry
--- In
DSN_klr650@yahoogroups.com, Thor Lancelot Simon
wrote:
> On Tue, Jan 06, 2004 at 06:41:01AM -0000, klr_rider001 wrote:
> > All Castrol's GTX oils exceed the SG rating you refer to, so you
can
> > freely choose from any of the following GTX products that meet
your
> > temperature requirements (from the Castrol website):
> >
> > SAE 5W-20: is a premium, multi-grade oil, providing cold start
> > protection with Exceptional Fuel Economy. SAE 5W-20 exceeds API
> > service SL, SJ and SH, as well as exceeding ILSAC GF-3/GF-2 for
API
> > Certified Gasoline Engine Oils and Ford WSS-M2C153-H. SAE 5W-20
> > should only be used in vehicles where SAE 5W-20 is recommended by
> > manufacturer.
> >
> > SAE 5W-30: is a premium, super multi-grade that provides maximum
> > cold weather engine protection and can help extend engine life.
SAE
> > 5W-30 exceeds ACEA: A1, API Service SL, SJ and SH, as well as
> > exceeding the requirements of ILSAC GF-3/GF-2 for API Certified
> > Gasoline Engine Oils and meets Energy Conserving Standards.
> >
> > SAE 10W-30: is a premium, super multi-grade that provides
excellent
> > fuel economy and can help extend engine life. SAE 10W-30 exceeds
> > ACEA: A1, API Service SL, SJ and SH as well as exceeding the
> > requirements of ILSAC GF-3/GF-2 for API Certified Gasoline Engine
> > Oils and meets Energy Conserving Standards.
>
> These three aren't okay, because they're Energy Conserving II oils
> that have friction modifiers that aren't nice to motorcycle clutches
> or transmissions. The heavier, non-energy-conserving weights are
okay.
>
> Thor