HEEELLLLPP!!!!!!!! Tranny fluid issue.

[Ryan Dillin]

I'm having a very nice long discussion on the benefit of GL-4 over GL-5 oil. So far through searching on this site I've already learned a LOT.

Anyway the topic of our discussion is basically about the safety of GL-4 versus GL-5 and it's sulfur content and how it affects 'yellow' metals, specifically in Mazda MX6's.

You can view the discussion here: MX6.com...Changing My Tranny Fluid? The real good stuff starts about 1/4 to 1/3 the way down between Ryan (me) and SleepCounter

I've already searched read through the following threads and sites:

Reactive vs. non Reactive sulfur

GL-4 VS. GL-5

http://www.lube-tips.com/BackIssues/2002-04-03.htm

http://sbcc.ca/tech/lube1.htm

So I've got a lot of great info to prove to him my point...but I need some more info that I couldn't find.

Helpful things would be actual sulfur concentrations in various GL-4 versu GL-5 oils (Especially Redline) and wether they are of the active or Inactive type. Another is the longevity and shifting performance of using a GL-4 or even a safe GL-5 oil over traditional ATF (which is what Mazda transmissions come with).

Also something I had no real hard info on, what kind of temperatures are produced by changing gears, or more specifically those esperienced at the synchro and gearface and wether it would be enough to cause 'active' sulfur to cause damage, keeping in mind we're talking about performance sports compacts that see drag strip duty.

Thank you in advance.

Laters
Ryan

 

[MolaKule]

quote:

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Helpful things would be actual sulfur concentrations in various GL-4 versu GL-5 oils (Especially Redline) and wether they are of the active or Inactive type. Another is the longevity and shifting performance of using a GL-4 or even a safe GL-5 oil over traditional ATF (which is what Mazda transmissions come with).

Also something I had no real hard info on, what kind of temperatures are produced by changing gears, or more specifically those esperienced at the synchro and gearface and wether it would be enough to cause 'active' sulfur to cause damage, keeping in mind we're talking about performance sports compacts that see drag strip duty.

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Most GL4 rated and GL4/5 rated fluids have inactive or "mediated" sulfur-phosphorus packages as the basic EP additive. In addition they have rust inhibitors which form films to protect against rust, and metal deactivators to prevent the metals and the EP additives from catalyzing into oxidants and sludge. Most fluids also have an antioxidant in the form of ZDDP, ZDTC, or ZDTP.

The sulfur levels in RL are quite low compared to motor oils and heavy industrial gear lubes.

For my view on the ATF verses GL4 gear lubes see:

http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=16;t=001303;p=1#000015

 

[Ryan Dillin]

quote:

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Originally posted by MolaKule:

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Most GL4 rated and GL4/5 rated fluids have inactive or "mediated" sulfur-phosphorus packages as the basic EP additive. In addition they have rust inhibitors which form films to protect against rust, and metal deactivators to prevent the metals and the EP additives from catalyzing into oxidants and sludge. Most fluids also have an antioxidant in the form of ZDDP, ZDTC, or ZDTP.

The sulfur levels in RL are quite low compared to motor oils and heavy industrial gear lubes.

For my view on the ATF verses GL4 gear lubes see:

http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=16;t=001303;p=1#000015 [/QUOTE]

Yeah, I've basically discovered that even though gear oils may contain the 'active' sulfur they have inhibitors, in which case it really doesn't matter which you use, GL-4 or 5. And since GL-5 contains more EP additive, and the inhibitors, would it not be a wise decision to use it, even in a GL-4 recommended gearbox?

Laters
Ryan

 

[Ryan Dillin]

Anybody?

Laters
Ryan

 

[TallPaul]

Some of the manual trannies that spec ATF have splash lubed components. My F150's Mazda 5 speed is like that (so I have read) and some have burned up parts by running gear lube as it was too thick to splash. I run the Redline D4 in mine which is GL-4. Thicker Redline MTL is also GL-4 and Redline says it can go in AFT manual trannies. Since you have a Mazda it may be a similar situation.

 

[Ryan Dillin]

So far I haven't blown any trannies on redline. Had it in four different transmissions in three different cars and loved what it did for shifting over standard ATF.

Laters
Ryan