08-13-2007, 11:35 AM
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#1
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Registered User
Join Date: Jun 2006
Location: Santa Barbara, CA
Posts: 34
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What kind of gear oil are you running?
I've been a huge fan of Redline products for some time now, but this is the first time I'm having an issue. I just changed my 986S' 6-speed gearbox oil to Redline MT90 and I think it is too slippery for the synchros to properly engage. Shifting is very notchy. Once you get past the initial effort, it feels great. Is anyone else running a synthetic fluid, redline or otherwise, that works well in these cars? Please let me know what brand/type of fluid and what your impressions are on the shift quality. Thanks guys,
-Tom
'01 986S
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08-13-2007, 11:54 AM
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#2
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Registered User
Join Date: Jul 2006
Location: Where the Sewer Meets the Sea, CA. USA
Posts: 2,695
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I use Royal Purple gear oil and report slightly smoother shifting but thats it, other than that, it feels close to the same as the mobile1 gear oil it had.
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08-13-2007, 12:05 PM
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#3
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Registered User
Join Date: Nov 2006
Location: Anchorage, AK
Posts: 172
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I put in Royal Purple yesterday and I'm loving it. It's much better than the MT-90 I had been using.
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08-13-2007, 12:25 PM
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#4
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Registered User
Join Date: Sep 2005
Location: Sacramento
Posts: 3,417
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Redline MT-90 has been in my car for 6 months,no complaints.
IT WAS A PAIN IN THE ASS TO POUR IN THOUGH.
Perhaps you didn't put enough oil in there,could that be it?
__________________
-99' Zenith Blue 5-spd...didn't agree with a center divider on the freeway
-01' S Orient Red Metallic 6-spd...money pit...sold to buy a house
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08-13-2007, 12:47 PM
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#5
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Registered User
Join Date: Mar 2006
Location: Orlando, FL
Posts: 998
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I just had the gear oil changed with the rest of the 90k service decided to try the redline, I have noticed no change in shifting characteristics. I'll flog it a bit on the way home this evening and see how it feels
__________________
kabel
Orlando - 99 BMW M Coupe (autocross toy), '11 Mazdaspeed 3 (dog hauler), '99 10AE Miata (the new daily driver)
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08-13-2007, 12:53 PM
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#6
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Registered User
Join Date: Nov 2006
Location: Anchorage, AK
Posts: 172
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The previous two posters, kabel and blinkwatt, both have 5-speeds. I had a 5-speed back in 2004 and it shifted like butter no matter what oil was in it.
I really miss the 5-speed, but the Royal Purple has gotten my 6-speed closer in shift quality of late. The Getrag unit is awefully particular about what oil goes in.
Blinkwatt, I used a small hand pump available at any local auto parts place. It screws right on to the bottle and makes filling a snap.
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08-13-2007, 01:25 PM
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#7
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Registered User
Join Date: Sep 2005
Location: Sacramento
Posts: 3,417
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Quote:
Originally Posted by Schnell!
Blinkwatt, I used a small hand pump available at any local auto parts place. It screws right on to the bottle and makes filling a snap.
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Do you have a pic of what this pump looks like?
__________________
-99' Zenith Blue 5-spd...didn't agree with a center divider on the freeway
-01' S Orient Red Metallic 6-spd...money pit...sold to buy a house
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08-13-2007, 03:53 PM
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#8
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Registered User
Join Date: Mar 2006
Location: Orlando, FL
Posts: 998
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Ah, I didn't catch on to the 6 speed part of the discussion.
I use this Hand Pump.
Quote:
Originally Posted by Schnell!
The previous two posters, kabel and blinkwatt, both have 5-speeds.
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__________________
kabel
Orlando - 99 BMW M Coupe (autocross toy), '11 Mazdaspeed 3 (dog hauler), '99 10AE Miata (the new daily driver)
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08-13-2007, 04:27 PM
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#9
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Registered User
Join Date: Sep 2005
Location: Sacramento
Posts: 3,417
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Quote:
Originally Posted by kabel
Ah, I didn't catch on to the 6 speed part of the discussion.
I use this Hand Pump.
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Awesome! I will keep that in mind when I change the 996s tranny oil. It was such a pain transferring the oil to a smaller container and forcing it into position to pour in on the Boxster.
__________________
-99' Zenith Blue 5-spd...didn't agree with a center divider on the freeway
-01' S Orient Red Metallic 6-spd...money pit...sold to buy a house
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08-14-2007, 06:00 AM
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#10
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Registered User
Join Date: Jan 2007
Location: Depends on the day of the week....
Posts: 1,400
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Redline 75W90NS in my 6-speed. Fantastic in my opinion, and what is recommended by Redline.
Patrick
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08-14-2007, 08:28 PM
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#11
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Registered User
Join Date: Aug 2005
Location: VA
Posts: 60
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Quote:
Originally Posted by bmwm750
Redline 75W90NS in my 6-speed. Fantastic in my opinion, and what is recommended by Redline.
Patrick
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I have just recently read about this recommendation (maybe here) and then in the last grassroots motorsports mag there was a redline ad specifically stating that this was the type to use in Porsche transmissions because of the design/clearances of components. The NS part is important apparently.
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08-15-2007, 06:47 PM
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#12
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Registered User
Join Date: May 2006
Location: Toronto
Posts: 277
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Quote:
Originally Posted by trogdor
I have just recently read about this recommendation (maybe here) and then in the last grassroots motorsports mag there was a redline ad specifically stating that this was the type to use in Porsche transmissions because of the design/clearances of components. The NS part is important apparently.
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I think the "NS" is "non-slip"?
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