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YOUR RESEARCHGearbox Oil...(manual 996.2)
Leading reported evidence
Install rather than optioned
Performed · outcome unconfirmed
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1
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Performed · outcome unconfirmed · Original poster
(i.e factory fitted rather than optioned..) It's not overly clear when you're looking at the options list.
Leading evidence: 'Install rather than optioned' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install rather than optioned' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Performed · outcome unconfirmed
I've used Amsoil for gearbox and diffs in my cars fore a while now and its never let us down.
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Performed · outcome unconfirmed
Although we have never used it, a very large independent specialist near us used Redline for a few years and reported a fantastic improvement in shifting, unfortunately they also experienced a lot of wear within the next year or so in the gearboxes it was in, mainly in the area of differential bearings and crown wheel and pinion.
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Suggestion
Why not just use a Porsche approved oil for your 996?
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Performed · outcome unconfirmed
Although we have never used it, a very large independent specialist near us used Redline for a few years and reported a fantastic improvement in shifting, unfortunately they also experienced a lot of wear within the next year or so in the gearboxes it was in, mainly in the area of differential bearings and crown wheel and pinion.
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8 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Porsche Forum Australia: 1 discussions
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Hi All,
I've no history on gearbox oil for my 996.2 so I'm looking to replace it so I know where I'm at
The question is - what are people using? Im flipping between Redline, Ravenol or Driven gear oils (all meeting Porsche requirements supposedly)
The gearbox is fine when hot... it's only when first started second gear needs not be rushed. Would like to make that a better experience.
Happy to hear thoughts
Same on my 993. After a few minutes of driving which depends on the ambient temperature, it shifts smoothly. I do not force shifts and simply use very light pressure on the shifter. I use Mobil 1 LS. I've read about the various lubes used on forums and I wonder if it really makes a difference.
I've used Amsoil for gearbox and diffs in my cars fore a while now and its never let us down. Even in the race cars its been by far the best of thoese we tried.
Agree with
@IXLR8
, my old 996 turbo manual in HKG was the same, needed a while to warm up before everything worked as it should.
separately to this - does anyone know if 996.2 C2s came with LSD or not? (i.e factory fitted rather than optioned..) It's not overly clear when you're looking at the options list.
M219 - Differential
M220 - Diff with 40% LSD
Neither option codes appear in my options list documentation for the car... so I have nothing
Unfortunately the synchro and associated parts are worn in your gearbox, new oil will mask the issue but not solve the problem. Although we have never used it, a very large independent specialist near us used Redline for a few years and reported a fantastic improvement in shifting, unfortunately they also experienced a lot of wear within the next year or so in the gearboxes it was in, mainly in the area of differential bearings and crown wheel and pinion. Maybe best not to go with that one
only ever an option.
Thank you for the information. I'm hoping the gearbox is 'ok' for a while yet. Will throw fresh oil and go from there. I shudder to think the $ to refresh a box.
Why not just use a Porsche approved oil for your 996? All the development work has already been done by engineers mostly more qualified than us. You'll find oil recommendations are usually anecdotal. Be warned.
https://shoplubricants.vivaenergy.com.au/shop/products/automotive-transmission-and-gear-oils/shell-spirax-s5-ate-75w90-20l-300011443?gad_source=1&gclsrc=ds&reload=true
It's some years since I looked at the Redline product, when I did, it was an API GL5 classification, which was totally unsuitable for any Porsche transaxle. The current offerings might be OK. You can test it and let me know lol.
