Redline oils

[martinwhitcher]

looking at using red line oil 10w/40 in a K 1600cc S/S, also MT-90 in the gearbox,

at comment good or bad?? (i'm using Comma Syner-G in the engine & Ford gearbox oil- which i belive is the wrong spec now!!!!)

 

Regards

 

Martin

 

 

[Peter Carmichael]

MT90 is probably the wrong choice as it is a GL-5 oil. MTL is a GL-4 and suitable for Ford 6 speeds and caterham six-speed boxes.

[martinwhitcher]

peter,

MT -90 says it is a GL-4 oil on it's web site?? have you used the redline brand?

 

 

[Peter Carmichael]

I have used MTL with some success. I wasn't aware that MT90 was a GL-4. Generally an 80 viscosity oil is recommended for the Ford and Caterham gearboxes, but it depends on temperature range. MT90 might be good for high ambient temperatures and endurance use. I would expect the gearchnge to be notchy from cold with MT90.

[felix.klauser]

Nicked shamelessly from Redline's website (http://www.redlineoil.com):

 

"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.

 

Red Line MTL is classified as a 70W80 gear lubricant satisfying the API Service requirements of GL-3 and GL-4. MTL also satisfies motor oil viscosities SAE 5W/10W/30, and the viscosity requirements for ATFs. MT-90 is a 75W90 GL-4 and also satisfies motor oil viscosities SAE 10W/15W/40."

 

Redline motor oils are nice but pricey. You could consider less esoteric fully synthetic oils such as Mobil 1.