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2004 Toyota Prius ND11 oil quantity?

HECAT on Thu October 09, 2008 9:29 AM User is offline

Does anyone have the spec for total oil quantity, starting clean and dry?

And can you confirm the spec I found for refrigerant charge (1 lb.)?

Thanks

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Edited: Thu October 09, 2008 at 9:30 AM by HECAT

JACK ADAMS on Thu October 09, 2008 12:03 PM User is offline

Karl,

I did not find any thing on oil capacity from any of the web site that I use but I did get the refrigerant capacities of 15.9 +/- 1.1oz that I did confirm with Toyota.

HECAT on Thu October 09, 2008 12:33 PM User is offline

Thanks Jack.

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JACK ADAMS on Thu October 09, 2008 12:41 PM User is offline

Did you find anything on the oil yet? When you do let me know so I can save it….

Good luck!

HECAT on Thu October 09, 2008 1:06 PM User is offline

Not yet, but I will definitely bring the answer back here if I find it elsewhere. Thanks again for confirming the charge spec.

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Edited: Thu October 09, 2008 at 1:06 PM by HECAT

TRB on Thu October 09, 2008 3:01 PM User is offlineView users profile

Just keep filling it up until it flows out the top!

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steve325is on Thu October 09, 2008 3:05 PM User is offline

I just checked the Toyota service website, and they are not saying what the total oil capacity is. They do mention that the compressor has a built-in oil separator to minimize oil circulation.

The stated 15.9 +/- 1.1 oz refrigerant capacity is correct.

-- Steve

HECAT on Thu October 09, 2008 7:58 PM User is offline

Thanks Steve, the built in separator is very interesting info. I will know much more by early next week as I am off to tear one of these cars and compressors apart and figure out what makes it tick. Maybe I will just have to figure out and publish the oil fill spec for Toyota.

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HECAT: www.hecatinc.com You support the Forum when you consider www.ackits.com for your a/c parts.

FLUSHING TECHNICAL PAPER vs2.pdf 

Chick on Thu October 09, 2008 9:05 PM User is offlineView users profile

While I did find a lot of reference to ND11 oil for the Prisus, I believe that is for assembly??? ..What I found for the Prius was that is uses ND 8 oil.. Here's is the system capacity chart. But, I have never opened the hood on one, so go by whatever tags are under the hood as far as type and amounts..Hope this helps..

As I said,am the amount and type may not be correct on this 04 prius oil chart



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Chick
Email: Chick

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steve325is on Fri October 10, 2008 10:35 AM User is offline

Priuii (?) through 2003 used a belt driven compressor and ND-8. 2004 and later use electric compressors and ND-11. Don't use ND-8 in a 2004 or later.

-- Steve

HECAT on Fri October 17, 2008 6:18 AM User is offline

Quote
Originally posted by: steve325is
Priuii (?) through 2003 used a belt driven compressor and ND-8. 2004 and later use electric compressors and ND-11. Don't use ND-8 in a 2004 or later.-- Steve

This is correct. I got to work on both; a first generation Prius (thru 2003, belt driven compressor, ND8 oil), and a second generation Prius (2004 and up, high voltage electric driven compressor, ND11 oil).

The issue is that the OE (and others) have determined that the wrong PAG (ND8 etc.) will eat away the insulation on the field windings inside the electric driven compressor and thus the need to use the specific ND11 oil. I do not know how long such decay takes but the contamination levels of concern (wrong oil) have changed over time from 3% to 1% and now to .01%.

To summarize the days of testing I performed; the 2004 was contaminated with the wrong PAG and run. This was repeated with increasing percentages of the wrong oil. No trouble codes were ever set and no failures occurred. System was completely flushed and the compressor was removed and drained (compressor replaced in the final test); then the correct oil was put back in. Car is running fine and will be monitored for sometime, as well as the scrutiny of many oil samples taken during this project.

Side by side these cars appear identical, and after some closer looks, I decided that the systems were identical with the exception of the compressor. The scroll does appear to be a slightly smaller displacement with the electric driven version (RPM?). Based upon this crude analysis, and the 5 oz spec provided for the 2003 and earlier model; I chose to install 5 oz. of ND11 in the 2004.

I have since been given a factory spec for the the 2004 as 4 to 4.5 oz. of ND11 oil. I have not seen this spec myself, but was told it came from a Toyota TSB that has not made its way to other sources (Mitchell, Alldata, etc.) yet.



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