Switching my oil to Redline. Any thoughts why I should not?

IMO the best oil you can use. The pic you show there is for straight 30w oil I wouldn't use that, go to their 5-30 or 40w product. You will get a million responses on what oil to use, this a very subjective question. When it gets down to it any fully synthetic oil is going to fine just change it regularly. In doing research on oil and what is in it I just happen to like Redline products. If you want to know about oils go to bobistheoilguy.com more than you will ever need to know about oil and how and what it does. Regards, Vern

 

The only horror is when u realized that u used something else for so long, dude. While ur at it, put it in ur trans and tell us how smooth ur shifting is. Of course, use the finer trans fluid for this.

 

Best thing you could do.

Replace your transmission oil as well, and it will shift better!

I can attest from my own experiences thanks to Rifledriver.

 

From what I have read on here, I must agree.
When I do my oil change, thats what I will use also.

 

Red Line is great!

However, during hot Summer months my oil pressure would drop pretty low at idle in my 348 when running the 5w30. Winter, no problem.

5w40, no problem in summer.

That MTL is great stuff for trannies, too...but I had to add an ounce of Red Line's Superlight Shockproof to the tranny full of MTL before I got great shifts out of it.

YMMV

 

same with me.

 

Same, except 0W-40 for summer/track and 5W-30 (as can't fiund good 0W-30) for winter.

 

I don't think Red Line MTL is the best thing for your tranny. Consider the 75W90 NS. MTL is better for older, non-synchro transmissions (we use it in the old Jaguar boxes and its great stuff). But for the 308/328 gearbox/transaxle, IMHO, their 75W90NS is the way to go. And if you find that you are getting a little groaning from the differential, you can add a 1/2 qt. to 1 qt. of their 75W90 which is a hypoid modified gear oil. Because you are lubricating both the transmission and the differential with the same oil, you need to strike a happy balance. Do not run straight 75W90, the hypoid modifiers are not great for the transmission sychros.

My $.02

 

I mix one quart of MTL with one quart of MT-90 for that right combination.

 

My shop is right down the road from Redline and we use their products in the race cars. I have had many long conversations with them about their products and their recomendations.

Ferrari specs GL5 gear oils for the transmissions. Due to Ferraris specs Redline will not officially suggest anything other than GL5 gear oils.

GL5 basically means an oil that is designed for medium to high offset hypoid differentials. MTL is a GL4 lubricant which means it is designed for medium to low offset hypoid gears. In the 308, 328, 348, 355 transaxles there are NO hypoid gears of any type, hi, low, or medium, offset.


I am not ordinarily an experimenter with others cars except in circumstances where the official way is obviously not working but I have seen MTL used with great success and zero problems in 308 transmissions since the product was introduced many years ago. It was also the oil of choice in the transaxles of the 355 and 348 Challenge race cars with zero problems. Those transmissions were subjected to greater stresses and heat in one weekend than most of our transmissions are in a lifetime. I cannot say that however of the AGIP oil spec'd by Ferrari at the time. One session at the track finished off several transaxles and we were told unofficially by Ferrari to quit using it in cars that would see track service. That garbage did remain the official oil.

I have been using MTL in customer cars that had cronic shifting complaints for several years including one 85 308 in daily service with over 115,000 miles on it and the owner is pleased to this day how his transmission performs.


It's great oil. If you have a shifting problem use it.


I would not use it in any transaxle in a 275, 330, 365, BB, BBi, TR, 288, F40, 550, 456, 360, 430, 612, or 599. Those are all medium offset hypoid gear differentials and should have GL5 oil.

 

One of my good friends uses Motul in his 355C and loves it. Expensive...but loves it.

 

Brian, great post.

Do you know of a place that carries the MTL down here in Unubtainableland, CA.?

Also, Redlins's tech rep suggested 10/40 engine oil for the 348. What 10/40 do you recommend? Syn. or not?

 

They're straight cut?

 

Not one. I switched to Redline 75W90NS and have never looked back.

 

I like Castrol TWS myself...it is hard to find anywhere but on-line and at BMW dealers though...

 

No. That would be kinda noisy.

 

I'd use 5-40 Redline.

Dont know anyone in that area that has it. We are not that far away from each other and many of the parts houses carry it around here. Look at the Redline website and see who carries it around there.

 

I would second the opinion on 5w oil or 0w. IMHO there is no reason to bother with 10w oils when you can get 0w or 5w oils, they flow faster when cold which is where most of engine wear occurs, the 1st few seconds after start up. Regards, Vern

 

Agreed! Just looked it up (hypoid). Now I understand.

 

Whats the difference between the 75W90 NS and MTL for the trans.

Currently I have no problem getting it into gear or shifting between gears...well except for it being a mid-engine car with a lever at one end with long rods to the trans at the other not leaving me with a positive solid feel.

I just have to remind myself that its not a Hurst connected to a Borg Warner T10 with sound positive shift position and solid movement.

Doug