08-08-2007, 05:48 AM
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Engineering first
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Real Name: Bob
Location: Huntsville, AL
Hybrids: Prius Classic 03
Posts: 5,040
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Version 1.18, proposed change
Hi folks,
This is what I'm planning to put in the FAQ but it seems wordy. Any editing help would be appreciated:
Quote:
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Originally Posted by new
The transaxle oil is good to ~30k miles in the NHW11, 2001-03 Prius, and ~60K miles in the NHW20, 2004-current, before the viscosity drops below 15% of the OEM levels. The NHW11 uses Type T-IV and the NHW20 uses Type-WS. Amsoil ATF tests revealed excessive copper contamination, do not use.
In dusty areas, use a shorter change interval because there is no filter. The NHW11 has a pan that should be dropped, the magnet inspected and wiped clean. The NHW20 has no pan. There is about a 25% dilution from inaccessible drain oil and contaminants.
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I'll be replacing this:
Quote:
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Originally Posted by original
Check transaxle oil early and replace if contaminated or discolored. Early results from an NHW11, Amsoil ATF experiment suggests an annual change or ~15,000 mi., will correspond to the worn out, 15% decrease in viscosity (31 cSt @40(C)). NHW11 uses 'Type T' and the NHW20 uses 'Type W'.
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Bob Wilson
Last edited by bwilson4web; 08-08-2007 at 05:52 AM.
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