 Gear Oil Additives, What are you using? |
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| ChrisFoley |
 Nov 30 2016, 10:11 AM
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#1
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I am Tangerine Racing  Group: Members Posts: 7,910 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None 
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I have a customer race car that needed to be resealed at the intermediate plate.
Now that it's back together I'd like to top off the fluid level. The gear oil in the box is red and doesn't have a strong gear oil smell. I asked the customer if it's from Redline or Lubrication Engineers. The response he got from from his previous shop is - Swepco with a little ATF. I think I've heard of that mixture before but not sure of the application. The gearbox has a Guard TB diff. Is that a recommended additive for the Guard diff? Is anyone else adding ATF to their 914 gearbox? |
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| brant |
Nov 30 2016, 04:34 PM
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#2
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914 Wizard Group: Members Posts: 11,613 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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I haven't heard of it
we have used an additive for 15 years but its BG - MGC I haven't heard of AFT |
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| Krieger |
Dec 1 2016, 12:14 AM
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#3
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Advanced Member Group: Members Posts: 4,702 Joined: 24-May 04 From: Santa Rosa CA Member No.: 2,104 Region Association: None
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I have a friend that uses STP in his 915. He swears by it. He probably does close to 20 DE/TT a year. Engine is a stout 3.2 making 270hp. Trans has no limited slip. I can't remember what gear oil he is using.
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| ChrisFoley |
Dec 1 2016, 08:04 AM
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#4
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I am Tangerine Racing Group: Members Posts: 7,910 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None
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QUOTE(brant @ Nov 30 2016, 06:34 PM)  ... I haven't heard of AFT ATF - Automatic Transmission Fluid |
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| brant |
Dec 1 2016, 08:20 AM
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#5
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914 Wizard Group: Members Posts: 11,613 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains
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QUOTE(Racer Chris @ Dec 1 2016, 07:04 AM) QUOTE(brant @ Nov 30 2016, 06:34 PM) ... I haven't heard of AFT ATF - Automatic Transmission Fluid Yes Fat fingers on a phone keyboard I was trying to say I haven't heard of anyone using atf |
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| stownsen914 |
Dec 5 2016, 11:18 AM
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#6
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Senior Member Group: Members Posts: 912 Joined: 3-October 06 From: Ossining, NY Member No.: 6,985 Region Association: None |
Hadn't heard of using ATF as an additive before.
I did a bit of research recently for a Hewland transaxle that has an LSD, and was told that at least for racing applications that friction modifiers are not necessarily needed if you are using synthetic lube. I think I've heard that the friction modifiers increase the slipperiness to optimize the clutch action in the LSD. Maybe ask the LSD manufacturer what's recommended? |
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