Gearbox Fluid, What Type Are You Using?

I've tried a few and the one that I liked the best is Mobil 1. This is after trying several in four different 328's.

 

I use Redline heavy shockproof (red)

http://www.redlineoil.com/products_gearlubricants.asp?pvID=87&prodID=61&subcatID=20

Limited slip works better, 2nd gear works better, reverse works better. Best thing I have ever used.

Jay

 

Hi Jay,

Your recommendations for the Redline Heavy Shockproof - is that for a 308 or a 328? Would it make a difference in either cars??

Thanks

 

most people here use Redline 75W-90NS, I changed to it and can now shift into 2nd when cold with my 308 QV.

 

I use Redline Shockproof (blue)
As a side benifit it allowed me to detirmine where my oil leak was
gearbox = blue

 

I've used Shell 75W-90 and Mobil 1 in the same grade in my 328 and prefer the latter. Easy shift to second when cold and no chatter from the diff.

 

Motul (2 bottles) and Redline (1 bottle).

 

Redline 75/90 NS in mine

 

Mobile 1 75-90

 

1.06 gallons of Redline 75W90 NS with 2 ounces of GM Limited Slip Additive.

Excellent shifting cold and warm.

'78 308 GTS

 

I'm probably the only person on the planet that has put in Valvoline. It's the only thing available locally and it has made the shift into second fine as long as it is 50 degrees outside.

 

I use the same stuff that Ferrari of Central Florida uses, gear fluid by Lubrication Engineers.

http://www.le-inc.com/

 

I used Mobil 1 and after 8k miles started getting some grinding (synchros) during shifting. Switched to Redline 75w-90NS with a little of the friction modifier, and shifting restored!

 

GM's Synchromesh.

 

That's what I was using before I switched. The synthetic works well below 50 degrees which is a must in the NW from November to the end of April

 

Hi, so you had grinding during shifting and just by switching oils this was gone, please tell me more !!!!

 

Not much to say....for some reason, with miles put on, the synchros no longer liked the Mobil 1 gear oil. Switching to Redline 75w-90 NS (NS stands for "no slip"), corrected the problem. As it was explained to me by the Redline tech, the Ferrari transaxle has a delicate lubricating requirements...slippery for the limited slip differential, less slippery so the synchros work correctly. Perhaps my gearbox was "off" or worn, I don't know (there were two previous service invoices from previous owners complaining of grinding during shifting). All I know is that using the Redline fixed it. Most other gear lubes have too much slip additive (according to Redline's tech) and can cause shifting problems in Ferraris. He recommended the NS variant, then add just a touch of the "friction modifier". I did end up with a bit of diff "chatter" under very limited circumstances, but according to the Redline tech, it is not harmful, and better to favor the synchros over the limited slip diff.

 

Using it in my '72 Dino with excellent results. It has helped 2nd gear shift, but not eliminated the need to be careful when it is cold.

 

I had some real trouble shifting my 328 into 3rd or 4th, as well as downshifting, regardless of whether the engine was hot or cold. I thought it was just the nature of the beast. However, after reading about all the positive comments on the Redline 75W-90 NS, I decided to have the gear box oil changed to this stuff. I'll tell you what...the difference was incredible!!!

The car shifts like a dream hot or cold! It's so easy to shift now! Downshifting is such a pleasure now. I couldn't believe the difference. The oil previously used must not have been something recommended for this model. I'm a true fan of Redline and would recommend it to anyone having shifting trouble with their 328.

 

Hey Dave, what type of friction modifier are You using with the Redline?

 

Hey guys,

I started a poll on this over a year and a half ago, 96 people chimed in. Don't forget to do a search on these types of questions, you might find some good data .

Most folks were using Redline, Mobil 1, or AGIP Rotra.

http://www.ferrarichat.com/forum/showthread.php?t=6978

 

I just voted. Take one guess as to which one I selected.

 

I strongly suggest Redline MTL. You don't need the standard 70w90 thick stuff, because your car doesn't have hypoid gears. They're all bevel cut. The MTL will make it shift like a Honda Civic.

 

The Redline 75/90wt mixed 50/50 limited slip/non-limited slip is a nice compromise between the needs of the gearbox (non-lim. slip) and the diff (lim. slip) - common oil supply. Redline recommends mixing in that proportion for this application and it seems to provide a good balance with no diff chatter and easier shifting.