A Smart Car transmission is a terrible thing to waste... - Smart Car Forums
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post #1 of 20 (permalink) Old 02-23-2010, 07:12 PM Thread Starter
 
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A Smart Car transmission is a terrible thing to waste...

Hi!

I love my Smart! She's the best!

I have never been able to find a way to check/monitor the transmission fluid. Is there a dipstick or are we working with the Crystal Ball Theory?
Please help me if you can!

Thanks,
Cindy
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post #2 of 20 (permalink) Old 02-23-2010, 08:02 PM
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there is no dip stick. It is like a normal manual transmission. it has a top and bottom fill hole with thick oil in it.
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post #3 of 20 (permalink) Old 02-24-2010, 05:11 AM Thread Starter
 
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Thanks for the quick lesson in MANUAL TRANSMISSION 101. I guess my next (less than brilliant) question is...how does one keep an eye on the fluid level before any possible damage is done?

Cindy
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post #4 of 20 (permalink) Old 02-24-2010, 05:17 AM
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Quote:
Originally Posted by SmartDigger View Post
there is no dip stick. It is like a normal manual transmission. it has a top and bottom fill hole with thick oil in it.
Actually, it has a SIDE fill-plug and and a bottom drain hole. The proper level of GEAR OIL (not automatic transmission fluid) is when the level is at the side fill-plug hole.

There is no provision in the smart maintenance schedule to ever change the gear oil. That omission is probably part of M-B's policy of trying to control perceived maintenance costs (like the extended engine oil change intervals). It is a manual transmission, and standard automotive procedure is to change its oil between 30k and 60k miles. In a smart it is neither difficult nor expensive. I changed mine at 1,000 miles to rid the transmission of any manufacturing and break-in detritus as there is no transmission filter. I will change it again at 45k miles, et seq.

For a transmission that supposidly never needs service, M-B/smartUSA identifiy certain oils to be used:
Castrol BOT328, 75W-90 API GL4
Mobil Delvac Synthetic gear oil 75W-90
Mobil 1 Synthetic Gear Lube LS 75W-90

Actually, M-B's Sheet 235.72 ("Automatic shift gear oil typ 451 and 454," dated 05 FEB 2010) specifies the Castrol BOT328 only; smartUSA's inclusion of Mobil products reflects Roger Penske's business dealings with ExxonMobil.

Last edited by Old smart; 02-24-2010 at 07:22 AM. Reason: sp.
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post #5 of 20 (permalink) Old 02-24-2010, 05:26 AM
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Well you need to change out the fluid when you change the clutch. And you change the clutch when it starts giving you problems. For some it may be at 30K for others it may make it to 100K+. It all depends on your driving conditions.

So yes they need a recommended fluid for when you get around to needing it. But setting up regular intervals that may or may not fit your driving needs can be quite wasteful



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post #6 of 20 (permalink) Old 02-24-2010, 06:04 AM Thread Starter
 
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Thanks for the info!

I have read about some of the transmission problems and felt I should get any info that I could.

Thanks,
Cindy
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post #7 of 20 (permalink) Old 02-24-2010, 06:12 AM
 
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It's neither necessary or recommended to change the transmission oil when you change the clutch !

A good idea, but NOT necessary
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post #8 of 20 (permalink) Old 02-24-2010, 06:21 AM
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The smart's transmission problems are usually not oil or maintenance related, more clutch or computer control issues than lack of oil. One would only really need to check the transmission oil if an oil leak became appparent. That has not been a common problem that I've heard about. If there needed to be one, MB would have specified a change interval.
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post #9 of 20 (permalink) Old 02-28-2010, 05:18 AM
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Hey Cindy,
What did you find out about your change in shifting performance?
smart minds want to know? How's she feeling now? All better I hope.
Rich
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post #10 of 20 (permalink) Old 03-01-2010, 05:16 AM
 
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I couldn't find GL-4 at any of the local auto stores. Plenty of GL-5, but having read somewhere on the forum that GL-5 is not desirable for GL-4 use, I ordered some Red Line synthetic that is specifically GL-4. Whether that was overkill or not, it made me happy. Just as frequent oil changes do. ha.
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