jrgordonsenior

[mistake.....

targa996

My indie used lubro moly .. German stuff ...engineered for Porsche .. Cheaper than oem. I'm happy so far - but no track yet. Check their website.

Viper6

He was commenting on the fact that 996 LSD's like mine in stock form were high wear items... this being my first LSD I just listened. After friction materials wear it moves to acting like a semi or open diff... again, I'm n o LSD expert, just sharing what I heard.

Viper6

Sounds like you have extensive P-car LSD experience and tuning... I think the tech was saying the clutch packs in the stock LSD were weak and I was niave if I thought after 10k that I still had a full LSD acting in there at that point... again, I have no experience so I just listened and appreciated his time and perspective.

He specifically stated Delvac was good for all 996 and they use for all their services including GT3 and is what they recommended and sell for that reason... good to hear your take on it as well however. I'll definitely post my experiences as this will be my 4th gear oil within 30 days... hopefully this is the one but I'm ok if not since relatively cheap experiment... trying 3 separate afttermarket is still less than buying OEM fill and will be one of my contributions to the rest of the forum so others may benefit... figured it would be worth a try so what the hell... as I learned from my fathers recent passing, you can't take it with you...

KrazyK

Wow Viper, sorry about your Dad.

So is the correct answer Shell or Mobil?????

jordanturbo

I used AC Delco Syncromesh in mine, It's not Porsche approved, but I have had luck with it in every manual vehicle I have owned. It was developed as a GM product with a special friction modifier for a GM truck transmission to save them from replacing all of the transmissions they sold and it worked. I have used it with awesome results in any honda transmission I have had including my civic with type r tranny and strait cut gears. All my Nissan trannies, my two M3 trannies etc. So when it came time to do the clutch, flywheel, RMS, IMS and tranny flush in my C4s, I figured I would give it a shot and have had awesome luck with that as well.

Viper6

Thx man

b8_rdc

Well with Redline you need to specify NS if you do not have a LSD and thus do not want the extra friction modifiers. I've had good results in 987/996 with 75w-90 NS.

So 75w-90 would be your formulation: http://www.redlineoil.com/product.aspx?product=57904

KrazyK

Never thought about using Syncromesh. Interesting, tell us more. Hows it doing in the C4S?

Akshun

anyone try the Royal Purple brand??
i have a 1999 996, not sure what ill try when i change my manual tranny fluid.
I do know that when im driving on a hot day, my 2nd gear usually pops out when i try to shift from 1st to 2nd, but in the cold, when oil is thicker, it shifts beautifully.
maybe i should try a different viscosity rating.

jordanturbo

I am very satisfied with it, it isnt approved for anything other than a few specific GM vehicles but is so over engineered that it is probably better than most MTF's out there. My C4S was a little notchy shifting between gears, most apparent between second and third. When I got the car I changed all the fluids, I put Lubromoly in the tranny which helped but not significantly. When I later did my clutch I figured I would give Synchromesh a try since whether I did it or not chances of my tranny needing a rebuild in the future were very likely. I have had it in for 15,000km and it is still shifting like a dream, fluid condition is still very good, and there were no shavings on my magnetic drain plug.

alpine003

I've had the same experiences and generally agree with this although I would be hesitant to use on my p-car. The problem I have is that a lot of people use this as a bandaid to just mask and get their trannies to run longer when it should've really been replaced or repaired. I'd be curious at the long term effects on the Porsche tranny.

GTgears

Here's why your tech is telling you your LSD is toast:
https://rennlist.com/forums/997-gt2-...sd-buster.html

The 2004 996 Anniversary vehicles got the same LSD as the 2004 GT3s, so they actually have decent ramps in them. All you need to do to make it a fully functional LSD is reclutch it...

jrgordonsenior

Come on Matt, you can do better than that. Talk oil....

PS: Good to know about the 40th using the GT3 diff...

jrgordonsenior

This: http://store.redlinespeedworx.com/pr...ar_comp_ff.htm