GL5 vs. GL4 Gear Oil for Transmission
#176
Registered
Just stirring the conversation - but I switched to this stuff from Pennzoil Synchromesh(which was also great, was due for a change) last summer and ever since I have had a lot more transmission whine. Transmission shifts great and feels fine - but the whine is an interesting side effect for me. Anyone else experience this as well?
Transmission is still original at 102k miles, but I just find it odd that I noticed it immediately after switching fluids over.
Transmission is still original at 102k miles, but I just find it odd that I noticed it immediately after switching fluids over.
#177
///// Upscale Zoom-Zoom
Just stirring the conversation - but I switched to this stuff from Pennzoil Synchromesh(which was also great, was due for a change) last summer and ever since I have had a lot more transmission whine. Transmission shifts great and feels fine - but the whine is an interesting side effect for me. Anyone else experience this as well?
Transmission is still original at 102k miles, but I just find it odd that I noticed it immediately after switching fluids over.
Transmission is still original at 102k miles, but I just find it odd that I noticed it immediately after switching fluids over.
#178
No respecter of malarkey
iTrader: (25)
Whine is usually worn internal bearings which is common on an S1 trans with moderate or more use/miles, first time I heard someone thinking this oil resulted in it though
Edit: 102k, yeah that's bearings and it never should have had synchromesh fluid in it in the first place
.
Edit: 102k, yeah that's bearings and it never should have had synchromesh fluid in it in the first place
.
Last edited by TeamRX8; 09-20-2017 at 10:31 AM.
#179
Registered
Whine is usually worn internal bearings which is common on an S1 trans with moderate or more use/miles, first time I heard someone thinking this oil resulted in it though
Edit: 102k, yeah that's bearings and it never should have had synchromesh fluid in it in the first place
.
Edit: 102k, yeah that's bearings and it never should have had synchromesh fluid in it in the first place
.
Edit: on topic of Synchromesh though - I know a couple people who have gone almost the entire 100k life of their transmissions with the Synchromesh fluid to no ill effects.
#180
Just for conversation's sake, here's my experience.
Rebuilt the motor in the 8 a total of 3 times, it's a long story, and have had Amsoil 75w-90 Long Life gear lube in the transmission for about 6,500 miles. I found that I didn't like the way the transmission shifted, it would grind upon hard acceleration shifting, and didn't want to downshift into 1st at all and 3rd and 2nd weren't much better. This is a GL-5 fluid designed for differentials but I figured it didn't matter for an old(er) transmission.
Fluid PDF: Amsoil 75w-90 Long Life gear lube
Swapped it to Amsoil 75w-90 Manual Transmission fluid and it seems to be doing much better. Smoother shifts, better downshifts, no grinds on hard acceleration shifting. This is a GL-4 fluid designed for manual transmissions and transaxles. It's been in the car for about 1,000 miles now and I feel like it is doing much better.
Fluid PDF: Amsoil 75w-90 Manual Transmission gear lube
I'm not an Amsoil fanboy. I just buy it because I get it cheaper than parts store fluid now that I'm a dealer, and only buy it for myself. When you're maintaining a Saturn, Suburban, Audi Allroad, RX-7 and RX-8 fluid adds up quickly and gets super expensive. Any way to save money is a good way!
Rebuilt the motor in the 8 a total of 3 times, it's a long story, and have had Amsoil 75w-90 Long Life gear lube in the transmission for about 6,500 miles. I found that I didn't like the way the transmission shifted, it would grind upon hard acceleration shifting, and didn't want to downshift into 1st at all and 3rd and 2nd weren't much better. This is a GL-5 fluid designed for differentials but I figured it didn't matter for an old(er) transmission.
Fluid PDF: Amsoil 75w-90 Long Life gear lube
Swapped it to Amsoil 75w-90 Manual Transmission fluid and it seems to be doing much better. Smoother shifts, better downshifts, no grinds on hard acceleration shifting. This is a GL-4 fluid designed for manual transmissions and transaxles. It's been in the car for about 1,000 miles now and I feel like it is doing much better.
Fluid PDF: Amsoil 75w-90 Manual Transmission gear lube
I'm not an Amsoil fanboy. I just buy it because I get it cheaper than parts store fluid now that I'm a dealer, and only buy it for myself. When you're maintaining a Saturn, Suburban, Audi Allroad, RX-7 and RX-8 fluid adds up quickly and gets super expensive. Any way to save money is a good way!
#182
Reread the post, spelled it out pretty plainly:
I wouldn't buy it if it wasn't cheaper than parts-store prices. I used to run Mobil-1 products forever in my nicer vehicles, Valvoline in the ones I didn't care so much about. I still use Mobil-1 oil filters when I can't get the filters I want/need.
I just buy it because I get it cheaper than parts store fluid now that I'm a dealer
#184
I do not sell Amsoil, I just use it at home for personal projects. I've never sold it to anyone else, I just hold the "Dealer" title in order to get it cheaper for myself. So I am not biased towards it, I just use it because it's cheaper than the parts store fluids. I used to, and still use, Mobil-1, Castrol, Pennzoil, and Valvoline products when necessary.
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Sydo (09-18-2018)
#189
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#190
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Yah, but the spec didn't change.
Skip to page 10-4.
Skip to page 10-4.
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Sydo (09-18-2018)
#192
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