Manual Tranny Oil

[cheapybob]

Redline SuperLight Gear Oil - a 70W/75W GL-5 gear oil with the viscosity of an ATF. This is used when temperatures are not high and when the maximum power output is required such as in qualifying laps.

Maximum power output would be when you have minimum friction loss

Its GL-5. Never tried it myself.

[Mighty Mira]

Originally Posted by JanGeo

Mobile 1 Smobile 1 just get a couple of quarts of Synlube!

How long does it take Synlube to get back to you? I emailed them over a week ago and still no reply so far.

[JanGeo]

Sometimes he gets too many emails and busy with manufacturing and shipping product. You might try giving him a call.

800-SYN-LUBE
702-683-8292

Mailing Address:
2961 Industrial Road #300
Las Vegas, NV 89109-1134

[caveatipse]

Ok I should ask, what is the difference between GL4 and GL5, and which is Mobil 1 gear oil?

[JanGeo]

http://www.pennzoil.com/products/gea..._gear7590.html

Pennzoil® Synthetic Gear Oils 75W-90
GL-4 and GL-5

Available in SAE 75W-90 viscosity grades of either API GL-4 or API GL-5 service classifications. Specially formulated with synthetic base stocks to meet the requirements that today’s cars, minivans, SUVs and light-duty trucks encounter in normal and severe driving conditions.

The synthetic base stocks used in Pennzoil® Synthetic gear lubricants provide better protection than low- and high-temperature conventional mineral-oil base stocks. They offer protection over a wide temperature range.

The API GL-5 product is specially suitable for use in limited slip differentials.

[Improbcat]

quick explanation of differences in GL4 and GL5. As for my comment about the scions and GL-4, here is an email from scion saying GL4 is better (not mine, from a guy on the scion board).

I used this Red Line MT-90 in my xB's transmission. It made an amazing difference, the transmission feels smoother and engages gears much easier. The Red Line fluid costs a bit more, but it is a high-performance gear oil with great anti-wear properties.

Mobil 1 is a brand of synthetic oils & lubes. It was the first and is still regarded by many as the best synthetic oil/fluids. I haven't used it ever so I have no opinion either way.

[JanGeo]

I know I added some really old (20 years) Slick50 Gear lube to my xB tranny oil and it increased the mileage and then switched just the tranny oil to Synlube before I did the engine oil and the mileage stayed the same with the Synlube. I have a feeling that the Synlube will result in much longer service life and probably provides more power transfer at heavy loads than the stock gear lube even with the Slick50 add to it.
If you use Red Line oils make sure you get ones made for daily use not racing use as the racing oils are not intended for prolonged use.

GL-5 is for limited slip differentials NOT for transmissions.