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Mechanical Maintenance (Oil, Fluids, Break-In, Servicing) Everything related to the mechanical maintenance of the FR-S and BRZ |
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08-19-2012, 09:00 AM | #1 |
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Anyone change transmission lube yet?
I know there have been a couple of postings on this subject but I was hoping to get more feedback.
So for those who have changed their gear lube what did you use and what effect did it have on shifting quality/feel?
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08-19-2012, 10:01 AM | #2 |
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I changed mine and used Redline's MT-90 (GL-4) transmission lube. Shifts were fine beforehand, and even better after. I used to get a (very) slight crunch into 3rd, but that is gone now. I will be driving the car through winter and it gets pretty cold here. If shifts degrade as it gets colder, I'll try switching to MT-85. By modern standards 90wt oil is pretty thick. It is a pretty easy job...the hardest part is removing the shields under the engine and transmission so you can access the drain/fill plugs. If you plan on being under the car anyway, I'd recommend changing the fluid in the differential as well. I used Redline's 75W85 GL-5 lightweight gear oil.
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08-19-2012, 06:02 PM | #3 |
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08-19-2012, 07:10 PM | #4 |
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NS? The only NS I saw was a 75W140. It has less or no friction modifiers (which is fine for a torsen as they dont need 'em), but imo is way heavier than needed for this application. It did seem strange that the oil in the transmission (75W90) is thicker than the oil in the rear end (75W85), but that is what the manual calls for, so I used it.
Last edited by roddy; 08-19-2012 at 07:21 PM. |
08-19-2012, 07:45 PM | #5 |
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Can someone make a DIY for this or is it straightforward? I believe they come with crush washers, correct me if I'm wrong.
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08-19-2012, 07:53 PM | #6 | |
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What you used won't kill it comma there is just a better option available. Sent from my SGS2 using Tapa-fkn-talk |
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08-19-2012, 08:21 PM | #7 | |
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Gotcha... I must have missed it. I'll give that a try next time around. 75W85 seems really light for a rear end. I think the reasoning there is fuel economy. |
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08-19-2012, 08:55 PM | #8 | |
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Quote:
The differential is even easier...there is nothing in the way. The drain plug is right in the bottom of the housing, and the fill plug is about 1/2 way up on the passenger side. It only takes about 1.3 quarts or so. If you are thinking about picking up some magnetic drain plugs, don't waste your money...the factory ones are magnetic.There are crush washers. I thought I had the right size here already, but I did not, so I re-used the OE ones and haven't had any leaks. |
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08-19-2012, 09:11 PM | #9 |
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^ Im gonna see if I can get those washers for free when I get my oil filter from the dealer
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08-20-2012, 01:07 AM | #10 |
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I'm "once bitten, twice shy" with Redline MT-90.
When I changed my trans oil I noticed it appeared to be identical to the Honda Manual Transmission Lube/Fluid (MTL/MTF). Look, smell, viscosity... Still kicking myself for not catching it and sending it off for analysis along with some Honda stuff for comparo. Either way, I have the Pennzoil Synchromesh in my transmission and Amsoil 75w-110 in my Diff. |
08-20-2012, 05:28 AM | #11 |
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Either way, I have the Pennzoil Synchromesh in my transmission and Amsoil 75w-110 in my Diff.
How is that Pennzoil Synchromesh working?
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08-20-2012, 07:39 PM | #12 | |
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Other than the OEM stuff, it's the only fluid I trust in there to be thin enough at low temps, strong enough at high temps and friendly enough to my yellow metals. |
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08-20-2012, 08:19 PM | #13 |
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I've seen it at my FLAPS and I don't recall if it is a synthetic?
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08-20-2012, 11:36 PM | #14 |
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