Differential Fluid Recommendation?
11-06-2017, 02:25 PM
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Differential Fluid Recommendation?
Looking for a budget friendly recommendation for an 2001 Boxster S, manual, standard differential. So many options, even Pelican has 1/2 dozen available. Thks in advance.
11-06-2017, 02:27 PM
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Use the Porsche 75W90 product bought from places like Suncoast Porsche or Sunset Imports.
11-12-2017, 09:57 PM
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I actually decided to use Swepco 201 which is going in tomorrow. The reason I was asking is that I am hearing some drive train noise, as evidence by engaging/disengaging the clutch. It seems it is getting worse, but Im not positive. I also notice that very slight gas seems to minimize noise. Noise is quite evident when coasting in gear (and thus slowing down under load). I do hear it under acceleration as well. I dont recall if that was before or after a recent fluid change, but I had used a synthetic, which I was advised was inappropriate. I will update over next few weeks if any improvement.
Any comments as to how to isolate/pinpoint the source of the noise would be helpful.
Any comments as to how to isolate/pinpoint the source of the noise would be helpful.
06-24-2018, 09:07 AM
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Just a followup: The drive train noise was not any different after the fluid change. I ended up having to rebuild the tranny. There were a few bad bearings in it. After the rebuild (which another group did), I reinstalled the tranny. The tranny has Swepco 201 in it. (Before that is was some other brand). Its been about 6 months now, and I am running into a pretty hard shift. And by hard shift, I mean that the car response is like a mild sudden jerk, not that there is really any difficulty in terms of my interface with the shift. While there was a warranty on the rebuild, the vendor is not cooperative. He wants me to pull the tranny and will run it on his test rig, but apparently is not even willing to take a test drive before that just to help debug if its tranny or maybe a clutch issue or something else. So I am left to my own as Im sure fighting it will go nowhere.
Its VERY notificeable first thing in the morning when I BACK out of the garage. It seems I am able to fully disengage the clutch without issue. I have about 2 inches of play from off the floor before the clutch seems to engage. And then moving into forward gear, I get a pretty hard gear engagement as well going into first and I think it is there in other gears as well. I am thinking that is this issue is showing in all gear transitions, then it should not be the tranny, but more associated with the clutch, but Im no expert.
I also dont know if the fluid level is correct, but id have to order a gallon of Swepco (which I believe is a 80w90 weight gear oil) just to top it off if it were not. Ive also read from pelican where pretty much any hypoid 75w90 oil should be fine. Im a bit reluctant to order the Swepco again. I do know they did want more Swepco when then rebuilt it, which I gave them what I had left, but dont know if they refilled it properly. I did the tranny reinstall and it was a pain to get back in just using a jack stand. Eventually, I had someone come by with a tranny jack and it went it smoothly, but I dont know if the initial attempts caused a problem.
In any case, my basic questions are, opinions on a suitable inexpensive gear oil to try? thoughts on how to debug this tranny issue without ripping it all apart?
Its VERY notificeable first thing in the morning when I BACK out of the garage. It seems I am able to fully disengage the clutch without issue. I have about 2 inches of play from off the floor before the clutch seems to engage. And then moving into forward gear, I get a pretty hard gear engagement as well going into first and I think it is there in other gears as well. I am thinking that is this issue is showing in all gear transitions, then it should not be the tranny, but more associated with the clutch, but Im no expert.
I also dont know if the fluid level is correct, but id have to order a gallon of Swepco (which I believe is a 80w90 weight gear oil) just to top it off if it were not. Ive also read from pelican where pretty much any hypoid 75w90 oil should be fine. Im a bit reluctant to order the Swepco again. I do know they did want more Swepco when then rebuilt it, which I gave them what I had left, but dont know if they refilled it properly. I did the tranny reinstall and it was a pain to get back in just using a jack stand. Eventually, I had someone come by with a tranny jack and it went it smoothly, but I dont know if the initial attempts caused a problem.
In any case, my basic questions are, opinions on a suitable inexpensive gear oil to try? thoughts on how to debug this tranny issue without ripping it all apart?
06-24-2018, 09:27 PM
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This is recommended for the differential side of the PDK....at least for my 981 Boxster:
https://shop.advanceautoparts.com/p/...E&gclsrc=aw.ds
https://shop.advanceautoparts.com/p/...E&gclsrc=aw.ds
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06-27-2018, 08:21 PM
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Thanks, anyone have any comments on the sympton side of things? possible causes? does it sound like it can be a a core tranny issue outside of a fluid level issue?? Could it be just fluid level? Damaged clutch bearing from fighting the reinstall? Clutch slave cylinder sticking? Should those clutch slave cylinder tips be greased? I'm also located in Vegas and this is an 01 Boxster S
07-05-2018, 12:56 PM
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Just a followup: The drive train noise was not any different after the fluid change. I ended up having to rebuild the tranny. There were a few bad bearings in it. After the rebuild (which another group did), I reinstalled the tranny. The tranny has Swepco 201 in it. (Before that is was some other brand). Its been about 6 months now, and I am running into a pretty hard shift. And by hard shift, I mean that the car response is like a mild sudden jerk, not that there is really any difficulty in terms of my interface with the shift. While there was a warranty on the rebuild, the vendor is not cooperative. He wants me to pull the tranny and will run it on his test rig, but apparently is not even willing to take a test drive before that just to help debug if its tranny or maybe a clutch issue or something else. So I am left to my own as Im sure fighting it will go nowhere.
Its VERY notificeable first thing in the morning when I BACK out of the garage. It seems I am able to fully disengage the clutch without issue. I have about 2 inches of play from off the floor before the clutch seems to engage. And then moving into forward gear, I get a pretty hard gear engagement as well going into first and I think it is there in other gears as well. I am thinking that is this issue is showing in all gear transitions, then it should not be the tranny, but more associated with the clutch, but Im no expert.
I also dont know if the fluid level is correct, but id have to order a gallon of Swepco (which I believe is a 80w90 weight gear oil) just to top it off if it were not. Ive also read from pelican where pretty much any hypoid 75w90 oil should be fine. Im a bit reluctant to order the Swepco again. I do know they did want more Swepco when then rebuilt it, which I gave them what I had left, but dont know if they refilled it properly. I did the tranny reinstall and it was a pain to get back in just using a jack stand. Eventually, I had someone come by with a tranny jack and it went it smoothly, but I dont know if the initial attempts caused a problem.
In any case, my basic questions are, opinions on a suitable inexpensive gear oil to try? thoughts on how to debug this tranny issue without ripping it all apart?
Its VERY notificeable first thing in the morning when I BACK out of the garage. It seems I am able to fully disengage the clutch without issue. I have about 2 inches of play from off the floor before the clutch seems to engage. And then moving into forward gear, I get a pretty hard gear engagement as well going into first and I think it is there in other gears as well. I am thinking that is this issue is showing in all gear transitions, then it should not be the tranny, but more associated with the clutch, but Im no expert.
I also dont know if the fluid level is correct, but id have to order a gallon of Swepco (which I believe is a 80w90 weight gear oil) just to top it off if it were not. Ive also read from pelican where pretty much any hypoid 75w90 oil should be fine. Im a bit reluctant to order the Swepco again. I do know they did want more Swepco when then rebuilt it, which I gave them what I had left, but dont know if they refilled it properly. I did the tranny reinstall and it was a pain to get back in just using a jack stand. Eventually, I had someone come by with a tranny jack and it went it smoothly, but I dont know if the initial attempts caused a problem.
In any case, my basic questions are, opinions on a suitable inexpensive gear oil to try? thoughts on how to debug this tranny issue without ripping it all apart?
1) confirm from your owners manual or your dealer the exact weight required and whether a friction modifier is recommended. Confirm both.
2) I would use this opportunity to try another brand. I like Redline; you could try that. Worse case go back to Swepco.
I arrived at the best option for me after trials. Some just appeared to work better in both cold and hot situations.
1) con
