Trany grind
#16
Racer
Perhaps, but it's what I read here is supposed to be the proper factory type fill. It will if anything give me a baseline to work from in trying other gear oils like Redline, etc. As I mentioned, I have no idea what is in the case now or even if it has ever been changed.
#17
Technical Guru
Rennlist Member
Rennlist Member
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Enso (09-16-2021)
#18
Rennlist Member
I have Mobilube PTX in my car now. https://www.suncoastparts.com/product/00004320420L.html
It feels really good once warmed up. During cold shifts it can be a bit challenging.
I still think the OE Porsche fill is the best all around fluid https://www.suncoastparts.com/product/99991754600.html
My.02
It feels really good once warmed up. During cold shifts it can be a bit challenging.
I still think the OE Porsche fill is the best all around fluid https://www.suncoastparts.com/product/99991754600.html
My.02
#19
Rennlist Member
I’m guessing synchros, based on the symptoms you’ve described. That would explain why it’s tougher to shift when the car gets hot. Steel synchros may be in your car’s future.
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Enso (09-16-2021)
#20
Rennlist Member
Last edited by P-daddy; 09-14-2021 at 11:28 PM.
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bobboinski (09-16-2021)
#21
Banned
Grind
Had issue with Lucas when cold and Cold like Frosty cold...where is OP?
at what temp is issue?
Did u test engine mounts? Sagging tips?
have you cleaned shift linkage ? After removing ice :>}
at what temp is issue?
Did u test engine mounts? Sagging tips?
have you cleaned shift linkage ? After removing ice :>}
Last edited by TJ993; 09-14-2021 at 11:39 PM.
#22
Rennlist Member
I run the Redline 75W 90 in both my 1988G & 993 C4S and with great success. Frankly, I have the Mobilube PTX on hand and may drain/fill 993 C4S with it but just to try and see how it is vs. Redline.
#23
Rennlist Member
worthless post, but imagine what you'd come up with by searching this topic on social media... a sign of the times.
#24
Drifting
For another data point, on my 96 C2 with an LSD, I refilled my factory-fill with SWEPCO 201, it was colored blue, and shifting was the same as before - like buttah.
With that said, I've always double-clutched all downshifts, so my synchro's love me.
With that said, I've always double-clutched all downshifts, so my synchro's love me.
Last edited by SwayBar; 09-16-2021 at 05:28 PM.
#25
Rennlist Member
Thread Starter
i have new engine mounts and golden rod, short shift, and all replaceable shift bushings
when I drive for a while in hotter weather ( was 30-40 C here for most of the summer) and motor gets closer to 3 or 4 o’clock temp. this is when miner grinding occurs, shifting also feels loser
I’m using Castro 75W-90
cheers