kanundrum

Ah Gotcha. Well Here is my Dilema the dealer is saying it has nothing to do with the LSD install (maybe true) so my question is if i do drive the car as it is and bay the trans and do not grind it (meaning shift way b4 4k rpms) how much damage am still doing to my transmission ??

tcengel

Your not going to hurt your transmission, just the synchros. The gears take some serious torques to destroy.

Give the fluid change a try before you do anything!

kanundrum

Sounds good Ill tell em to use stock toyota fluid

tcengel

any update?

kanundrum

Still working with dealer on it, but here is the spec sheet for royal purple


http://www.royalpurple.com/prod-pdfs/max-gear-ps.pdf

tcengel

Yep, definately not something you want in your synchro tranny. Try:

Synthetic Manual Transmission Lubricants


Red Line Oil's MTL and MT-90 are designed to provide excellent protection and improved shiftability for manual transmissions and transaxles, having cured the problem of hard shifting in thousands of transmissions with shifting troubles. How? They have the appropriate coefficient of friction for most manual transmission synchronizers (many gear oils, engine oils, and ATFs are too slippery for proper synchro engagement). And, the wide viscosity of MTL and MT-90 allow proper shifting over the entire temperature range which the transmission will experience. The synthetic base oils used have a very high viscosity index which provides relatively constant viscosity as temperature changes. MTL is a low 70W at very low temperatures and a high 80W, nearly an 85W, at elevated temperatures, providing adequate viscosity to prevent wear and deaden gear noise. MT-90 is a thicker 75W90 version of MTL. The shear stability and oxidation stability of these products are excellent, thus the physical characteristics of Red Line MTL and MT-90 will change little with use

MT-90

Popular in Nissan, Toyota and Mazda manual transmissions and transaxles as well as other selected applications, this is a 75W90 GL-4 Gear Oil that’s slightly heavier than MTL. Provides excellent protection of gears and synchronizers and its balanced slipperiness provides a perfect coefficient of friction, allowing easier shifting.

kanundrum

Was Also Looking at Motul 300 75w90 I heard Motul is some good stuff

tcengel

Nope, not gonna fix your problem. You need Redline MT-90, BG Synchro or Penzoil Synchromesh.

kanundrum

Pretty Odd, The AEM tC that Dezod Sponsors also uses Motul

tcengel

Probably because Dezod is a Motul vendor. Don't get me wrong, Motul is good stuff but it's not going to help your problem.

paul_dezod

Dan Gardner's Motul agreement is with Motul directly as his deal is with Nitto, Energy, AEM etc. We had no bearing into him running Motul fluids.

kanundrum

How about the Motul Fluids for daily use ? What do you recommend for our transmission ?

tcengel

Wow, you are stubborn! I give up.

paul_dezod

I don't see why not a Motul Gear 300. The Subby fellas run it daily and so do the EVO guys too.

kanundrum

haha naw I hear what your saying. I just believe that Motul is better quality in terms of over all product.

tcengel

Seriously, just try it! It says right on the package:

Popular in Nissan, Toyota and Mazda manual transmissions and transaxles as well as other selected applications, this is a 75W90 GL-4 Gear Oil that’s slightly heavier than MTL. Provides excellent protection of gears and synchronizers and its balanced slipperiness provides a perfect coefficient of friction, allowing easier shifting.

tcengel

It's great in the STI 6-speed, not so much in the 5-speed.

tcengel

You can start reading here.
http://forums.nasioc.com/forums/show...+gear+grinding

I can give you hundreds of pages of reading if you want it.

kanundrum

That is some pretty crazy stuff right there, I know toyota stock specs are GL-5 and yours was GL-4. Not sure if this is all related to it or not but if this is the case then there are plenty of other people on this forum who use the purple stuff and I guess haven't heard any problems from them yet. Will have to investigate more but definitely thanks for the information. For right now I will have the dealer just put the stock stuff back in and see where we go from there.

tcengel

Or, try this if your stuck on Royal Purple.

Synchromax is a manual transmission fluid that increases performance and the life of your equipment. It improves shifting, reduces gear noise and increases power transfer to the wheels. It also lowers operating temperatures and provides outstanding wear protection for longer transmission life.

Synchromax is recommended for manual transmissions that specify an automotive transmission fluid. It’s also ideal for 4×4 transfer cases and motorcycle gear boxes. Synchromax is fully compatible with all types of friction materials. It provides excellent corrosion and oxidation protection without affecting the soft metals commonly found in manual transmission synchronizers.

Synchromax is formulated with Royal Purple’s proprietary Synerlec technology for unsurpassed performance and protection.

See our transmission lubricant cross reference chart for specific applications