Smt oil change blues - MR2 Owners Club Message Board
 
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post #1 of 7 (permalink) Old June 2nd, 2019, 18:32 Thread Starter
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Smt oil change blues

Any advice about changing the oil in my 2003 MR2's sequential manual transmission? 2 dealers and 3 transmission shops and my local mechanic have sent me home. Anybody in Connecticut qualified to perform the service? What if I don't change it? (I think I know the answer to that question.) Is this a reliable trans? I saw a Pagani Huayra with a 7 speed SMT. I guess that for the extra $1,989,000 more than I paid, you should get one extra speed.
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post #2 of 7 (permalink) Old June 3rd, 2019, 03:52
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Originally Posted by geneburshuliak View Post
Any advice about changing the oil in my 2003 MR2's sequential manual transmission? 2 dealers and 3 transmission shops and my local mechanic have sent me home. Anybody in Connecticut qualified to perform the service? What if I don't change it? (I think I know the answer to that question.) Is this a reliable trans? I saw a Pagani Huayra with a 7 speed SMT. I guess that for the extra $1,989,000 more than I paid, you should get one extra speed.
Your SMT transmission is just like a regular manual transmission and it takes the same gear oil. Recommended oil is 2.2 liters 75W90 GL-4 and I personally suggest Redline MT90. Draining and filling are same as for any manual five-speed or six-speed transmission. You have 24mm drain plug and fill plug on the underside of the trans accessible from under the car on a lift or on jackstands with the undercover plastics out of the way. Any idiot with a socket wrench, a catch pan, and a flexible funnel should be able to do it.

If you are talking about the HPS unit (the robot) oil/hydraulic fluid that's a different story entirely but unless it's acting up you just want to leave that alone.
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post #3 of 7 (permalink) Old June 5th, 2019, 19:58 Thread Starter
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We were idiotic enough to do that. I'm talking about the rest of it, not the transaxle. The part involving the pump, requiring special software, etc. that nobody had and nobody would know how to use anyway. That's what 2 idiot dealerships, 2 idiot transmission shops, and my own favorite idiot mechanic couldn't do.

Is there anyone out there who actually has an SMT and performed non-idiot maintenance on it? Merryfrankster's answer is exactly what each of those five worthies told me. None of them had actually worked on an SMT. And they don't seem to understand that 16 year-old oil should be changed, not left alone.
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post #4 of 7 (permalink) Old June 5th, 2019, 20:48
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Originally Posted by geneburshuliak View Post
We were idiotic enough to do that. I'm talking about the rest of it, not the transaxle. The part involving the pump, requiring special software, etc. that nobody had and nobody would know how to use anyway. That's what 2 idiot dealerships, 2 idiot transmission shops, and my own favorite idiot mechanic couldn't do.

Is there anyone out there who actually has an SMT and performed non-idiot maintenance on it? Merryfrankster's answer is exactly what each of those five worthies told me. None of them had actually worked on an SMT. And they don't seem to understand that 16 year-old oil should be changed, not left alone.
Alright thank you for being more specific with your query, none of us here are mind readers.

The software you're talking about is Techstream. This is proprietary Toyota software but you can get a cracked copy along with a cloned com-cable on Amazon for about $50.

The original SMT fluid is no longer available anywhere. Do not use Pentosin, Ravenol, or any other advertised substitutes they will mess up your unit. Make a custom mix of 90% Dot3 brake fluid and 10% Castrol RR363. Go get more details on Spyderchat.

Good day.

PS> From the department of "it ain't broke, but fix it anyway," have you considered changing the EHPS on your power steering? That stuff is also sweet sixteen and you should consider popping the cherry on that rack. Ha ha.

Last edited by merryfrankster; June 5th, 2019 at 21:06.
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post #5 of 7 (permalink) Old June 12th, 2019, 20:38 Thread Starter
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Does anyone know if the actuator pump on the SMT is affected in any way if the clutch needs to be replaced? Does anyone know how to replace the clutch on an SMT? Thanks-
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post #6 of 7 (permalink) Old June 12th, 2019, 20:49 Thread Starter
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Ha ha! Thanks- as a matter of fact, the only fluid change left, except for the SMT, is power steering which I'll let the dealer do.

Do you know if glass is available? There's a 4 incher in the windshield.

Last question- and thanks for your patience because I am not an MR2 expert- just a recent owner who'd like to really keep it sweet (through daily use, of course.) What's it like to change the clutch- specifically, does the actuator pump have to be dismantled, etc.? This would be the death of the car, because there seems to be no one who can work on the SMT here in the state of Connecticut, my shame to admit it.
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post #7 of 7 (permalink) Old June 16th, 2019, 19:46
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The clutch is just like on a manual transmission. To get at the clutch, you have to drop the transmission, and to do that you have to disconnect the hydraulic actuator unit. Once you get the transmission out, you don't have to disassemble anything else if you don't want to.
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