CHECKING TRANSMISSION AND DIFFERENTIAL OIL LEVELS - Toyota Prius Forum : Prius Online Toyota Forums
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#1 (permalink) Old 05-13-2007, 08:00 AM
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Default CHECKING TRANSMISSION AND DIFFERENTIAL OIL LEVELS

How do you check the above mentioned levels. I looked under the car and spotted several different plugs. Not sure what plug is for what.

Thanks
westex

2007 PRIUS TOURING. OPTION PACKAGE 6
SILVER WITH GREY INTERIOR.

LOYALTY ABOVE ALL ELSE, EXCEPT HONOR.
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#2 (permalink) Old 05-13-2007, 09:24 AM
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If it's not indicated in the owners manual, then there is probably a reason that you don't.
(I don't.)
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#3 (permalink) Old 05-13-2007, 11:36 AM
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Default trans fluid level

The tranmission and differential in the Prius share the same fluid reservoir. The fluid is Toyota type IV from 2001-2003, and type WS in later years. There is some degree of uncertainty whether WS is backward-compatible, but I am now using it in my 2001 (so I guess we'll find out...)

Under the car are visible drain plugs for engine oil, the above mentioned transmission fluid, and the 'inverters and motors' coolant, Your owner's manual identifies them.

Trans fluid level is checked by removing a bolt about halfway up the trans. case, and it should be right up to that level. The bolt is not so easy to find and indeed, few will check it unless there is evidence of leakage under the car.

I am one of the 'believers' that trans fluid should be changed on 60k mile intervals, and perhaps sooner when type IV fluid is used. Not all agree with this, even though it has been shown to accumulate particles and to lose viscosity over time.

DAS
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