engine and primary fluids
Club Member
Joined: Feb 2007
Posts: 16,320
Likes: 306
From: Boynton Beach, FloriDuh
Also, none of my stator failures were attributable to the GL-5 attacking yellow metal. In all 3 cases, the copper wires broke after the winding wire left the final turn on the coil and broke due to the unsupported wire being exposed to excessive vibration. The Cycle Electric stators address this problem by also encasing this area in epoxy.
Believe the internet myth's if you want, I'll stick with scientifically proven facts.
Stellar HDF Member
Joined: Aug 2009
Posts: 3,212
Likes: 212
To top it off, there are several more stator failures here on this forum where the user never even saw a GL-5 oil. I guess Formula+ eats stators too. Or, you know, it could be the common factor that it's the stator failing and has nothing to do with the oil.
Road Master
Joined: Jun 2009
Posts: 933
Likes: 1
From: Indianapolis
Just since we are on the topic of stator failure. I have seen some stuff from Victory that Harley's stators fail because of their location and over heating. They sit right up against one of the hottest parts of the motor and have no method of cooling other than the primary oil. Victory states they don't have that problem, because their stators mount to the primary cover (exact opposite location of the Harley) and are partially cooled by the air flowing over the primary cover. Never found any scientific data proving this, but it is interesting non the less.
On another note, has anyone tried Spectro's new STL (Sportster Transmission Lube)?
It's a full synthetic GL-1
http://www.spectro-oils.com/spectro-...eavy-duty-stl/
It's a full synthetic GL-1
http://www.spectro-oils.com/spectro-...eavy-duty-stl/
Stellar HDF Member
Joined: Aug 2009
Posts: 3,212
Likes: 212
On another note, has anyone tried Spectro's new STL (Sportster Transmission Lube)?
It's a full synthetic GL-1
http://www.spectro-oils.com/spectro-...eavy-duty-stl/
It's a full synthetic GL-1
http://www.spectro-oils.com/spectro-...eavy-duty-stl/
Any price info? It's not available locally that I've seen and I can't find reliable results on my phone.
Doesn't look too bad. The only complaint I have would be that it's a 75W-140, which is a little thick on the top end than what is called for in the primary. I typically see big twins use the heavy stuff in transmission only.
Any price info? It's not available locally that I've seen and I can't find reliable results on my phone.
Any price info? It's not available locally that I've seen and I can't find reliable results on my phone.
My concern was the weight but i think a 75w140 is between a 20w50 and 20w60 engine oil whereas 75w90 is between a 20w40 and 20w50
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Stellar HDF Member
Joined: Aug 2009
Posts: 3,212
Likes: 212
Dang, that would nearly double the price of my oil change!
Yeah, the heavier stuff just seems out of spec for what is called for. Formula+ is known to be an ~80 weight gear oil, or equivalent to a 40 weight engine oil.
Yeah, the heavier stuff just seems out of spec for what is called for. Formula+ is known to be an ~80 weight gear oil, or equivalent to a 40 weight engine oil.
Club Member
Joined: Feb 2007
Posts: 16,320
Likes: 306
From: Boynton Beach, FloriDuh
Not to mention the $$$ price. The cheapest I've found was $18.50/qt plus shipping. That's twice what I pay for a quart of M1, which I can pickup at any local auto parts store.