915 Trans Oil
02-13-2002, 06:32 PM
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915 Trans Oil
Thinking about changing to Valvoline 85-140 trans fluid for my 130K 911T 915 trans. Should I go synthetic or straight? Does synthetic in an older trans have the same effect as in an older engine - is it more likely to leak?
02-13-2002, 07:18 PM
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[quote]Originally posted by jsd:
<strong>Thinking about changing to Valvoline 85-140 trans fluid for my 130K 911T 915 trans. Should I go synthetic or straight? Does synthetic in an older trans have the same effect as in an older engine - is it more likely to leak?</strong><hr></blockquote>
JSD:
IMHO, you would do a LOT better in every respect if you changed to Swepco #201 gear oil. This product is simply "magic" in Porsche transmissions using the baulk-ring type syncromesh and shifts better than anything else.
Use no synthetic in any 901-915-930 tranny; this will accelerate wear and not shift well at all.
<strong>Thinking about changing to Valvoline 85-140 trans fluid for my 130K 911T 915 trans. Should I go synthetic or straight? Does synthetic in an older trans have the same effect as in an older engine - is it more likely to leak?</strong><hr></blockquote>
JSD:
IMHO, you would do a LOT better in every respect if you changed to Swepco #201 gear oil. This product is simply "magic" in Porsche transmissions using the baulk-ring type syncromesh and shifts better than anything else.
Use no synthetic in any 901-915-930 tranny; this will accelerate wear and not shift well at all.
02-13-2002, 07:31 PM
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I tried the lighter Mobil 1 in mine, and it didn't shift as well. I'm currently running 85/140, and it works much better, especially hot! I'm trying to find a source for Swepco 85/140
02-13-2002, 11:10 PM
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RL Technical Advisor
FWIW,................
In my 28+ years of Porsche-dom, I've not found anything better than Swepco # 201 85w-90. No need for anything thicker. Excessive gear oil temps should be dealt with by installing a cooler and pump.
We used this in 400 HP RSR's and 750+ HP 935's for many years with excellent shift quality and R&P life.
In my 28+ years of Porsche-dom, I've not found anything better than Swepco # 201 85w-90. No need for anything thicker. Excessive gear oil temps should be dealt with by installing a cooler and pump.
We used this in 400 HP RSR's and 750+ HP 935's for many years with excellent shift quality and R&P life.
02-14-2002, 05:25 PM
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A local tech converted my 915 to Mobil 1. I started having very balky shifting problems in multiple gears. I switched to Swepco 201 and have been much happier. I was concerned with cold weather shifting with non-synthetic. No problem. I suggest you listen to everyone on this forum and go for Swepco.
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02-15-2002, 12:18 AM
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You really cannot go wrong with Swepco in a 915 tranny.I did find a source for both weights of Swepco, 201-210.... Bobby Archer's German Motor Works in Ft. Worth Tx. He has a web site.
02-15-2002, 07:10 AM
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Does anyone know if Swepco 201 is available in the UK? I am currently running my '78 California spec SC on a synthetic gearbox oil which has an added friction modifier to help the synchromesh - it is supplied by either Amsoil or Redline, I cannot remember which. Anyway, it works great when the box is cold but is not so good when things warm up a bit. Any advice would be greatly appreciated
02-15-2002, 08:34 PM
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Found this post on the Pelican board from a gent from Dorset, UK. Hope it helps.
"rang berlyn services 01271 866818 uk importer for swepco 201 ordered today first customer apparantly its going in the gearbox on thursday"
"rang berlyn services 01271 866818 uk importer for swepco 201 ordered today first customer apparantly its going in the gearbox on thursday"
02-19-2002, 02:06 AM
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Here is a rennlist sponsor plug.
If you want to buy Swepco 201 then check out <a href="http://www.ritegear.com." target="_blank">www.ritegear.com.</a> I am not related to the guy in any way but he is a Rennlist Sponsor (check the sponsorlist) and a a PCA member/enthusiast. He sells the 80W90 for $36 and some change. Check him out since he helps keep the list going.
Ron Horton
rhorton600@aol.com
If you want to buy Swepco 201 then check out <a href="http://www.ritegear.com." target="_blank">www.ritegear.com.</a> I am not related to the guy in any way but he is a Rennlist Sponsor (check the sponsorlist) and a a PCA member/enthusiast. He sells the 80W90 for $36 and some change. Check him out since he helps keep the list going.
Ron Horton
rhorton600@aol.com
