Redline Vs. Neo Tranny Fluid (my experience)
#128
www.silverbulletrx7.com
For the most part, any decent "big name" synthetic transmission fluid is going to be about the same as the others. Most people who rave about one or the other neglect to also mention how long the previous transmission fluid had been in their cars. In most cases, any *new* fluid would have seemed fantastic regardless of brand.
#129
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Viscosity shear on Redline and RP after 15k miles is pretty bad, based on threads I've seen on BITOG. I'd pick Mobil 1 before either of them, and Amsoil before all. http://www.amsoil.com/storefront/mtg.aspx
Instead of voicing random opinions, we should start a UOA trans and/or diff oil thread and get some hard humbers. What good is "feels better"?
Instead of voicing random opinions, we should start a UOA trans and/or diff oil thread and get some hard humbers. What good is "feels better"?
Last edited by no_more_rice; 01-12-10 at 06:04 PM.
#130
Fast + Reliable = $$$$$
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This time around I tried Amsoil and for some reason the first time I was hard on the transmission on a canyon run it became VERY notchy too the point that I was locked out of 1st gear...I had to wait for the trans to cool down to drive again! After that one day it has never done that again even after beating up on it at the track for a whole day, no complaints.
Can anyone explain why the first hard run was notchy??
I think I'm gonna try Mobil 1 next round and see how I like it....
Can anyone explain why the first hard run was notchy??
I think I'm gonna try Mobil 1 next round and see how I like it....
#131
10-8-10
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The original owner of my car put in redline. When the car is cold I don't think it feels smooth at all. So far I'm not impressed with the redline. It is a bit old since it was put in back in the mid 90s but the mileage is low. Looking forward to trying some neo or amsoil. I can get amsoil really so I might go that route.
#133
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So I decided to change the fluids in my FD that I've owned a little over a year now, did some research and decided to go with the NEO synthetic 75w90HD for gearbox and rear since there is a lot of positive feedbacks here. I ordered a gallon of the NEO and when i got it,I noticed that the oil seems pretty thin (watery). What do you guys think?
#136
rotor 4ever piston never
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What's up, so my FD has been on jack stands over the winter and I finally decided to change the gear oil before I took it off. After reading threads on here I decided to go with the NEO 75W 90HD gear oil which I put in there this past weekend. I had 2 buckets, drained the old oil which came out clean no metal shavings nothing and I filled the next bucket with the NEO gear oil to make sure I put in the same amount that came out. It took the entire gallon of NEO gear oil. So basically 1 gallon came out and one gallon went in and I didn't over full cuz I kept fulling until it started coming back out the full hole. Now before I change the oil the gears shift pretty good ,all gears was smooth except that notchy 2nd gear. Now with the NEO gear oil in there its a bit stiff to go into all gears but there's no grinds or notchy feeling just little stiff and I don't feel like I'm putting it in a gear, its just slides rite in. Did anyone experience this or is that just how the oil is? I don't know but I don't like it so any help is gladly appreciated. Thanks.
Shiva.
Shiva.
#137
10-8-10
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What's up, so my FD has been on jack stands over the winter and I finally decided to change the gear oil before I took it off. After reading threads on here I decided to go with the NEO 75W 90HD gear oil which I put in there this past weekend. I had 2 buckets, drained the old oil which came out clean no metal shavings nothing and I filled the next bucket with the NEO gear oil to make sure I put in the same amount that came out. It took the entire gallon of NEO gear oil. So basically 1 gallon came out and one gallon went in and I didn't over full cuz I kept fulling until it started coming back out the full hole. Now before I change the oil the gears shift pretty good ,all gears was smooth except that notchy 2nd gear. Now with the NEO gear oil in there its a bit stiff to go into all gears but there's no grinds or notchy feeling just little stiff and I don't feel like I'm putting it in a gear, its just slides rite in. Did anyone experience this or is that just how the oil is? I don't know but I don't like it so any help is gladly appreciated. Thanks.
Shiva.
Shiva.
#138
rotor 4ever piston never
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That's the same thing I was thinking but its the same amount of the old oil that came out cuz I measured the amount of oil that came out with the amount that i put in. I had 2 same exact buckets and I made sure the level of both oil were the same and also I know a lot of people who fulls the box until it starts coming back out the full hole and that's it. I'll be taking the car to my mechanic this weekend to do some other stuff so ill have him check it out. Thanks.
Shiva.
Shiva.
#139
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I was under the impression NEO is a Cali product, just like Red Line.
#140
rotor 4ever piston never
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Thanks! Another forum member said its basically to much oil in there and that I only need 2.5 qts which I knew but I took out one gallon and as I was fulling I just waited for it to start coming back out and it took a gallon. I'll get a measuring jug and put the rite amount in there and see what happens. Thanks.
Shiva.
Shiva.
#145
SEMI-PRO
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Just from my experience I preferred how the Amsoil worked in my old FD. Even when cold it seemed to keep the synchros happier. As soon as KD rotary installed my 6 puck clutch and refilled with Redline it got notchy and liked to grind when cold.
Have used royal purple also and would choose Amsoil over all of them. It made a noticeable difference to me, even over whatever Mazda was using back in the day.
Have used royal purple also and would choose Amsoil over all of them. It made a noticeable difference to me, even over whatever Mazda was using back in the day.
#146
Cheap Bastard
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I know that this is an old thread, but I just switched from Red Line to Neo in my tranny. The Red line was several years old, and I never had any issues with it. I had heard good recommendations about Neo from members here, and from Mariah Motorsports. Anyway, I can feel an improvement. The tranny definitely shifts smoother and easier than it did with the Red Line. I put Neo in the rear differential also. I give it Neo big thumbs up
#148
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So I had a major transmission rebuilder tell me the oil used from the factory (not sure which it is) is the best to use. The synthetics like neo don't allow the transmission to operate as designed and can actually damage the transmission.
Now if a transmission shifts smoother I'm not sure how it would damage the transmission. Any insight into what I was told?
Now if a transmission shifts smoother I'm not sure how it would damage the transmission. Any insight into what I was told?
#149
TANSTAFL
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So I had a major transmission rebuilder tell me the oil used from the factory (not sure which it is) is the best to use. The synthetics like neo don't allow the transmission to operate as designed and can actually damage the transmission.
Now if a transmission shifts smoother I'm not sure how it would damage the transmission. Any insight into what I was told?
Now if a transmission shifts smoother I'm not sure how it would damage the transmission. Any insight into what I was told?
Main thing to worry about is if the oil is yellow metal safe. As in corrosive or not to syncros and bearings. GL-4 is a safe bet. Some GL-5's are OK too. The best is if the container actually states yellow metal safe. I now personally use CRC Sta-Lube 80w-90 GL-4 Gear Oil from NAPA. It says yellow metal safe right on it. I would have gotten Mazda spec'd gear oil if it was more convenient.
Some additional reading: Yellow metal safe gear oil | ATF, Differential, Trans, Brakes, P/S | Bob Is The Oil Guy
#150
Rotary Freak
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Hello Any opinions on which fluid is best for track use ? I was told to use redline , BUT after all the reviews here I'm kind of on the back foot .
I used royal purple with decent results . But it would ocasionally grind at the track when going into third . this may just be a synchro issue .
i'll be getting a new trans now and was curious what people seemed to like best when the car is getting abused on the track .. I can live with the fluid being notchy in the cold I can double clutch just fine
My priority is when its getting shifted time after time at 8k rpms . what works best then ?
I used royal purple with decent results . But it would ocasionally grind at the track when going into third . this may just be a synchro issue .
i'll be getting a new trans now and was curious what people seemed to like best when the car is getting abused on the track .. I can live with the fluid being notchy in the cold I can double clutch just fine
My priority is when its getting shifted time after time at 8k rpms . what works best then ?