JAGMAN1

I changed the oil a few weeks ago with PTX. I've probably driven 100 miles since. 1st gear jam is fixed completely. All other gears are smoother than before. 2nd gear in particular is far less notchy than before, but still not perfect.

I consider this a great success. Would recommend to anyone.

Drain and fill plugs both use crush washers to achieve a tight seal. The crush washer is identical to the oil drain plug.

gumbyaz

Add another satisfied customer. 3 liters of Mobilube PTX and my 07 C4S with 30k miles is shifting great. No more first gear issue. Worked like a charm.

Lvt19672

Did it take all 3 liters? I just received my 3 liters of PTX from Suncoast but it looks like one of the bottles contains less than a full liter,maybe 3/4 of a liter.

gumbyaz

I got mine from suncoast also. Bottles are obviously hand filled, so my guess is that quantity varies slightly.

But....the quantity was spot on. My pump was just starting to suck air on the 3rd bottle when I saw drips starting to come back out the fill port.

I wouldn't worry about it...will be close enough anyway even if 1/4 liter short.

Jastx

Meant to add the best thing about the change is I don't even think about it anymore. I wait with the clutch out and don't even push it in until the light changes. Complete confidence.

ptshrdn

This thread is amazing! Can't wait to try this in my 2006.

Another data point I haven't seen mentioned: I had taken the car into my mechanic maybe six months after I got it for this issue -- he postulated a shifter cable adjustment was needed, i.e. the reason for the balkiness was the shifter physically not lining up with the gate. (My best non-technical explanation; I've never seen the insides of that.) After an adjustment it was better, but still occurred. Then of course the shifter cable broke a few months later.

964polar

PTX Mobilube all the way. Did my fluid change 200km ago and it feels perfect. Had a slight hard 2nd gear change which is gone. PTX was probably the previous fill, but now I was at 100.000 km (62k miles). Sourced it from Germany into Sweden.

Cheers

Bruce In Philly

Adjusting the cables will do nothing. There is a tiny cable adjustment thingy where the cables attach to the shifter, but that is to adjust the angle or uprightness of the shaft. Adjustments have no effect on shifting because everything related to that is inside the transmission. The shifter is floppy mess and it held in place by the cables. The click click, the springyness etc is all done inside the transmission. Another misconception is the cables are pulling and are under tension. The cables also push. So when you are in say 1st gear, or neutral, or whatever, the entire cable/shifter system is totally slack. The shifter is held in place by the transmission. There is a false assumption that adjusting the cables changes the distance a lever is moved... this is just not so as the lever distances are controlled inside the transmission and not by the shifter or cables.

I experience temporary improvement in shifting when I replaced my shifter for a Numeric..... but that improvement faded. I attribute the improvement to a change in my shifting behavior and not the mechanism. If you move in clean left-right, then front-back motion, you will move only one cable at a time. If you move in an arc, you will move two mechanisms at the same time and that will increase jam frequency (IMO, YMMV, at least that is my experience).

Peace
Bruce in Philly

motopix

Exactly the problem. I had new tranny oil put in about 10k miles ago from another Indy I had been using. The tranny itself only has had about 10-20k miles at that point but the car was new to me and I wanted to get a fresh start on all fluids. No idea what they put in but based on what I know now, I'd guess it was Delvac. That seems to be the go to trans oils for most places. It's way cheaper (about $6-7 for Delvac from my new Indy/liter vs. $38/liter for PTX from Suncoast) and more available than PTX. But if PTX fixes the problem and last 100k+ miles, the cost is insignificant.

Today I had PTX put in. The oil in the there looked very clean coming out; I didn't do a smell or taste test on it's vintage. My initial reaction over 40 miles of shifting through traffic is that it fixed the problem.

I will report back after a couple of weeks.

fastm3

Is everyone still happy with this? If so, I'm going to try it.

This (first gear) issue has really kept me from enjoying my 997's driving experience to the fullest, from day one. I hope the fix really works....

motopix

I'm only on day 3 w/PTX and I'm willing to call it amazing. Usually I have several first gear jam ups/day. Not a single jam so far.

Carmichael

Ugh. I did a drain and fill on my car, which was surprisingly filled with RedLine Shockproof Lightweight (milky blue in color and smells like Ranch Dressing on a Buffalo Wing). I replaced it with Royal Purple MaxGear 75W-90 thinking the lighter weight would improve cold shifting, which was notchy and heavy when the car was cold with the Shockproof. I also got a lot of the 1st gear jamming.

It was quite the opposite. I have to handle my gearchanges with the fragility of a Faberge egg, or I'll get a sickly crunch through the shifter on 4th, 5th and 6th, until the gearbox warms up to temp. I still get the first gear jam as well. Very disappointed, but more surprised, MaxGear has worked well with my other cars with transaxles.

I'm gonna order some PTX next, and see if that will make a difference.

motopix

The PTX mostly cleared up the balky when cold shifts as well. It did not however grow the hair back on my head.

Buddhamonk

I got mine on order - because of this thread...sigh....

Carmichael

Hey Bruce, you get your kickback check from Suncoast yet?