Red Line oil in passenger cars

Messages
12,310
Location
Colorado Springs
I had a problem with the MT-90 in 2 different car transmissions calling for a 75W-90 and were "recommended" by redline's website. A 1995 Pathfinder and a 2004 Audi A4 1.8t. Both shifted like **** in anything under 30 degrees F until the trans warmed up. 20 and below was like shifting through mud. Once I went back to OEM Audi fluid shifting was never an issue again. The pathfinder I ended up trashing cause the frame was rotting out. That's not to say that it is a bad product or any of their products are bad. Just my experience with MT-90 in 2 different vehicles. I haven't used their engine oils yet. I have Amsoil gear lubes, oil and ATF in my Stage 2+ 2.7t S4. I haven't had any issues. Though, my sump is ~8qts now since I use the bigger oil filter and an second oil cooler.
MT-90 is too heavy. I know people are using it on track. Even BimmerWorld that recommends RL for everything, doesn’t recommend MT-90, even for track for my model. MT-LV heaviest they recommend.
D4 works like a champ. No issues shifting after vehicle being parked for 8hrs at -34 few weeks back.
 
Messages
155
Location
NJ
MT-90 is too heavy. I know people are using it on track. Even BimmerWorld that recommends RL for everything, doesn’t recommend MT-90, even for track for my model. MT-LV heaviest they recommend.
D4 works like a champ. No issues shifting after vehicle being parked for 8hrs at -34 few weeks back.
Well, it's too late now. I got rid of that pathfinder in 2011 and the A4 in 2019. There was one guy on the pathfinder forum years ago that couldn't recommend it enough so everyone was using it. I just expected more from a lube that states a pour point of -49 and it sucked at 30. But hey, learned my lesson! I do miss my pathfinder though. :-(
 
Messages
12,310
Location
Colorado Springs
Well, it's too late now. I got rid of that pathfinder in 2011 and the A4 in 2019. There was one guy on the pathfinder forum years ago that couldn't recommend it enough so everyone was using it. I just expected more from a lube that states a pour point of -49 and it sucked at 30. But hey, learned my lesson! I do miss my pathfinder though. :-(
Pour point is different from viscosity. D4 and MT-90 I think have same pour point, but D4 is ATF, much thinner.
 
Messages
155
Location
NJ
Pour point is different from viscosity. D4 and MT-90 I think have same pour point, but D4 is ATF, much thinner.
I am no expert so if I had to do it again I would take your recommendation. However, even the redline website today suggests MT-90 which would cause a regular consumer like me to trust that recommendation. But as I said, I learned my lesson. I have no more manual transmission vehicles at this point.
 
Messages
12,310
Location
Colorado Springs
I am no expert so if I had to do it again I would take your recommendation. However, even the redline website today suggests MT-90 which would cause a regular consumer like me to trust that recommendation. But as I said, I learned my lesson. I have no more manual transmission vehicles at this point.
Yeah. Redline recommends 4 different fluids for my BMW. They should at least give more detailed explanation what fluid is for what conditions.
 
Messages
155
Location
NJ
Yeah. Redline recommends 4 different fluids for my BMW. They should at least give more detailed explanation what fluid is for what conditions.
Still not gonna stop me from trying their oil eventually. When though, who knows. Under warranty in my 2 Subarus and I have enough for another OC in my Wife's CR-V which will be March next year. As for my S4, I don't drive it so I haven't changed the oil in I think 2 years and I have enough M1 for another 3 oil changes when I do eventually fix and drive it. I might even have enough Amsoil left for another change too. I forget. Age man....
 
Messages
7,042
Location
Wet side WA
Still not gonna stop me from trying their oil eventually. When though, who knows. Under warranty in my 2 Subarus and I have enough for another OC in my Wife's CR-V which will be March next year. As for my S4, I don't drive it so I haven't changed the oil in I think 2 years and I have enough M1 for another 3 oil changes when I do eventually fix and drive it. I might even have enough Amsoil left for another change too. I forget. Age man....
I know just how you feel I am too! Yep I think I'm going to use it in my spring OCI in April of 2044 for my hundredth Birthday oil change!
 
Messages
12,944
Location
Middlesex County CT
Scratching my head as to why there is an extended discussing regarding redline (i understand the OP initially asked about it) when Valvoline produces a product that SPECIFICALLY addresses his concerns.

It is like discussing how well a dime can be used to drive screws, after someone has indicated "use a screwdriver" JMO
 
Top