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[ST] Oil Curiosity, Hopefully not an Oil Thread



I really think I'm confused as to what kind of oil is "recommended" for my
'02 ST.  Since I'm a new guy to the list, I'd be willing to bet I'm not the
first guy to ask the following question, "What makes that Triumph oil worth
$12 a quart? (probably a liter, but close enough)  Considering the following
information, there is conflicting data as to exactly what's in that silver
bottle marked Triumph blend.  Does it really have a hot rating of 50 making
it contradict the Service Manual?



Anyone have the real answer on this???

Thanks,

Rod





The following is what I base my confusion on.



My Owners Handbook states "Triumph high performance fuel injected engines
are designed to use semi or fully synthetic 15W/40 motorcycle engine oil
which meets specification API SG or API SH and JASO MA."   It also states
not add any chemical additives and not to use mineral, vegetable,
non-detergent, or castor based oils.



My Service Manual states "Triumph high performance fuel injected engines
must be filled with 10W-40 or 15W-40 semi or fully synthetic motorcycle
engine oil which meets API SG or API SH AND JASO MA specifications ."   It
has a caution box  that states "Do not use 10W rated oils with a hot
viscosity rating greater than 40."  It specifically states, do not use
10W-50 and goes on to state "Do not use oils with a cold viscosity rating of
0W or 5W."  It does go on to say that the Triumph blend Mobil 1 4T Racing
meets or exceeds all their specs.



Below is something I pulled off of http://www.triumphnet.com/st/faq/maint/.
Subject: MX4T oil
I would like to know what the difference is between Mobil's MX4T oil and the
Triumph branded Mobil 1 oil for motorcycles. Thanks, Richard D. White



Dear Mr. White,

Thanks for your interest in Mobil's new line of Mobil 1 Motorcycle Oils.
Your question on the differences between Mobil 1 MX4T and Mobil 1 for
Triumph is a good one.

First of all, both products are premium quality fully synthetic motorcycle
oils that will provide exceptional performance in all 4-stroke motorcycles.
There are a couple of small differences in the products, as part of their
expected application and target market segments, but the core high
performance additive system is the same for each product.

Mobil 1 for Triumph is a SAE 15W-50 grade product, based on Mobil's European
Mobil 1. This product was fully tested by Triumph in-house and therefore is
fully approved and recommended as the preferred product for Triumph
motorcycles.

Mobil 1 MX4T is an SAE 10W-40 viscosity grade developed for the US market,
where a 10W-40 grade is preferred for 4-stroke motorcycles, particularly
Japanese sport models

In addition, we offer Mobil 1 V-Twin, an SAE 20W-50 grade, targeted for
hot-running V-Twin powered bikes, particularily those that are air cooled.

As mentioned above, all three products will provide excellent performance
and durability in any 4-stroke motorbike. However, we offer the different
grades to target the needs of different customers and different motorcycle
manufacturer's recommendations.

Please let me know if you require any further information, and again, thank
you for your interest in Mobil 1 Motorcycle Oil.

Ray Bergstra Automotive Product Manager




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