Post-Searching Confusion on Manual Tranny Fluid.
#1
'86 N/A Phone Dials
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Post-Searching Confusion on Manual Tranny Fluid.
So the recommended weight for transmission fluid, (defined by haynes) is 80w-90. Yet throughout all the other threads, I only saw people talking about 75w-90. Also alot about premium/racing brands like Neo, Royal Purple, Redline. I haven't gotten into my tranny fluid yet, but it sounds like ***. I went and bought 'Valvoline "DuraBlend" Synthetic Blend SAE 80w-90 Gear Oil' because it was like $4.90 a quart. I didn't want to go cheap cause you don't change tranny fluid that often, do you?
They also had Mobil 1 75w-90, from what I gathered on the other threads, this eats away at the brass synchro's that we have. (specifically i have an '86 N/A). Does the Valvoline that I bought have the same high sulfur content that's gonna ruin my synchro's? My 1-2 synchro is bad allready. I'm not too concerned with a Gear Oil that will somehow "fix" my synchro's. Just a gear oil that will work, and not make things worse.
How much do Redline, Neo, Royal Purple, etc cost per quart?
I don't race, but I give my car a very heathly workout.
Looking for suggestions, and/or advice.
They also had Mobil 1 75w-90, from what I gathered on the other threads, this eats away at the brass synchro's that we have. (specifically i have an '86 N/A). Does the Valvoline that I bought have the same high sulfur content that's gonna ruin my synchro's? My 1-2 synchro is bad allready. I'm not too concerned with a Gear Oil that will somehow "fix" my synchro's. Just a gear oil that will work, and not make things worse.
How much do Redline, Neo, Royal Purple, etc cost per quart?
I don't race, but I give my car a very heathly workout.
Looking for suggestions, and/or advice.
#2
Senior Member
I've used Redline MT-90 for about 15 years. With the factory gear oil, I could barely make the 2 - 3 shift (with cold drivetrain) in the winter. The MT-90 completely eliminated that problem, and improved all-around shifting as well.
You would need to buy 3 quarts of Redline MT-90 at $8 to $10 each. The lowest price I've seen is on ebay--about $8 per quart.
You would need to buy 3 quarts of Redline MT-90 at $8 to $10 each. The lowest price I've seen is on ebay--about $8 per quart.
#3
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it looks as though you can use either gl-4 or gl-5 75w-90 gear oil. synthetic or not doesnt matter. gl-5 is backward compatible with gl-4. i am running mobil 80w140 synthetic, its a little stiff when cold, but fine once warmed up.
#5
Former Moderator. RIP Icemark.
Originally Posted by Needa13b
They also had Mobil 1 75w-90, from what I gathered on the other threads, this eats away at the brass synchro's that we have. (specifically i have an '86 N/A). Does the Valvoline that I bought have the same high sulfur content that's gonna ruin my synchro's? My 1-2 synchro is bad allready. I'm not too concerned with a Gear Oil that will somehow "fix" my synchro's. Just a gear oil that will work, and not make things worse.
#6
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Originally Posted by Icemark
Actually any gear oil except for Redline, Neo, and Royal Purple that the tranny temp can exceed 220F-240F can cause the sulfer oxide break down.
Last edited by Icemark; 04-13-05 at 12:34 PM.
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#11
About 2 years ago i change my tranny and rear diff. fluids to valvaline synthetics, they were free since i worked there, and they have worked great for me. the tranny and diff felt alot better after changing them. GO for it valvoline is fine.
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Originally Posted by djpacman
I don't know if the tranny oil in my 86 n/a has ever been changed i didn't think you had to change manaul oil should i? (no problems with tranny)
#14
Former Moderator. RIP Icemark.
Originally Posted by Needa13b
So is the jury still out on 'Valvoline DuraBlend Synthetic Blend 80w-90'?
Or is there a verdict?
Or is there a verdict?
So use at your own risk, and do regular oil changes and don't overload the tranny if you are going to use Valvoline.
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