Gear Oil Question

Sorry, I know this has been done to death but reading the archives I can't get a difinative answer,
Gonna change the Gear Oil in my 348 and Redline seems to be the way to go but which one,
75w90
75w90NS
75w90NS with the additive
Super Lightweight Shockproof

Thanks in advance

 

I did well with my 75w90 Shockproof oil. But others also had great improvements with 75w90NS. Your call brother! You have probably already read through this. My 348 still shifts smooth as silk.

http://www.ferrarichat.com/forum/showthread.php?t=101885

 

In my car, I have not been impressed with Redline 75w90 (without the NS)

 

I changed mine out with Redline 75W90NS--per Redline rep. It made a huge difference in shifting---smooth with no grind!!!

 

I spoke with Redline rep as well. They recomend 75w90 NS for rear transaxle cars like Ferrari's. I have use 75w90 in my 308 and it worked fine. I think there is not a right answer, but any of the Redline products should be fine as long as you follow maintenance schedule.

The only difference except the anti slip additive is the NS has some corrosion additives that the regular does not. It also may stick to/ lubricate the trany gears better.

 

So the favourite seems to be the 75w90NS with no additive, anymore comments???????

 

Mine had Castrol Syntec in last October and it's been 'ok' (2nd hard when cold as usual) and have been waiting till' it was due again to try the Redline stuff. I have just ordered some 75/90NS from:

http://www.turbobits.co.uk/acatalog/redline_synthetic_gear_transmission_differential_axle_oil_fluid.html

Should have it in at the weekend, I'll let you know how it dirves from cold if it's not pi$$ing it down.

 

Cheers Chris, just ordered some myself from Demon Tweeks, should change it at the weekend.Am also going to check the cable adjustment,have you done this on yours and if so did you notice a difference??

 

It changes into all gears fine afer a couple of miles so I have left the cables well alone, they can't be far off. I have no experience adjusting these so would probably end up making it worse..

 

I think ernie has a cable adjusting procedure that he helped Ferrarigirl out with not too long ago. Or whatever her name was? Or was it miltonian that posted the steps on here?? Do a search and you shall find.

 

75-90 NS no additive

 

I just changed mine tonight for NS. I'll report back when I've tried it. 2nd was not acheivable when cold and the lever is a bit bent forward from someone forcing it!!!

 

At the shop as a practice we use The 75-90NS because it is compatible with all the gearboxes we service but when there is a complaint of hard shifting in the cars without hypoid gears (308,328,348,355) we use Redline MTL. It was a favorite with many of the Challenge teams and makes the cars shift unbelieveably easy.

 

Just put 75-90NS in mine this weekend. Smoother all round, though I never considered my gearbox to be a 'problem' one before so the change isn't dramatic.

Here's some pics. Pretty pointless I know, but everyone likes pics right?
Image Unavailable, Please Login
Image Unavailable, Please Login
Image Unavailable, Please Login

 

Chris -

Lookin' good! Was that top fill plug tighter than a (fill in the blank)?? Mine required the strength of 12 oxen to open. Good thing fellow fchatter, "resnow", was helping!

 

Did mine as well this weekend, as you say, not a massive change, but enough to notice an improvement.
My drain plug was exactly the same as yours Chris.

 

Your not wrong, had to use a 1/2 inch impact gun to loosen mine.

 

Great pics.

 

any other comments on Redline MTL? anyone else using it?

 

I've used the OEM AGIP/Shell nonsense, RedLine's SuperLight Shockproof, and RedLine's MTL.

Forget the OEM. As for RedLine's MTL, I didn't get butter-smooth shifts out of it until I added an ounce of RedLine's SuperLight Shockproof to it in the tranny.

I have no idea if that's just my tranny or more widespread, though.

 

I only needed the socket this time, but it was hell of a lot tighter than I was expecting (it was me who did it last year so I know for a fact I didn't over-tighten it). Must be just how they are - the bottom plug wasn't exactly loose either.

 

Same thing with my previous 328GTS and current 355, for whatever reason, those things are hard to remove, even when properly torqued before. No idea why that is...

 

I changed to Redline NS last week and it has greatly improved things. I can now get 2nd when cold, but if I hurry it, the synchro cant keep up and it crunches in. It seems to be getting better though.

Its fine when warm. I would say it has transformed the car. Well worth the effort.