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View Full Version : what type of tranny fluid


eltesoro
09-08-2006, 01:09 PM
When i purchased my 01 Prostar 205 v the guy said he had been using motor oil in the tranny. I have never heard of such. Could this be right? What is the best way to change it?

billr
09-08-2006, 01:25 PM
Motor oil in the V-drive, transmission fluid in the tranny. One of those manual pumps Aotozone or local auto parts store. Don't overfill.



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bigmac
09-08-2006, 01:27 PM
When i purchased my 01 Prostar 205 v the guy said he had been using motor oil in the tranny. I have never heard of such. Could this be right? What is the best way to change it?Hurth switched to recommending 15w40 in their V-drives in 2003 or 2004 because they were getting complaint about rattling noises at idle when they were using Dexron III.

bbutler2001
09-21-2006, 07:04 PM
What kind of tranny fluid are you supposed to use in the earlier years? I have a 1:1 PCM in my 91 and all I get from the service manual 20 20w oil? thanks

Brian

east tx skier
09-26-2006, 01:32 AM
There was a thread on the Nicholl's forum a while back on the subject. The guy had a PCM 1:1 transmission and said his manual recommended Dexron II, the current replacement for which is Dexron III. That's what I use in my BW 1:1.

pflcjl
09-26-2006, 07:03 AM
I also noticed in the owners manual of my 2006 Prostar 197 TT power slot that it calls for 15W-40 motor oil for the transmission. Never heard of this. Is this true or a typo in the manual??

bigmac
09-26-2006, 08:29 AM
I also noticed in the owners manual of my 2006 Prostar 197 TT power slot that it calls for 15W-40 motor oil for the transmission. Never heard of this. Is this true or a typo in the manual??

15w40 is what I found in my 2004 V-drive tranny when I changed it last year, and it's what my MasterCraft manual and the Indmar engine manual calls for that year. I called the dealer, he called Hurth and they confirmed that in that transmission, they are recommending 15w40, not ATF.

These are very simple transmissions with no torque converters. I suspect it's not critical

Davo
09-26-2006, 10:07 AM
I switched from ATF to 15W-40 about a year ago on my '02 direct drive with the 1:1. It seems to run smoother.

I use a cheap hand pump from the auto parts store and (2) empty two liter bottles. Pump the old fluid out into one container and fill the other container with new fluid to the same level as the old fluid. It makes it easy to fill it to the same level. If your going from ATF to oil you might want to run the boat and change it again to get all the ATF out.

east tx skier
09-26-2006, 11:43 AM
15w40 is what I found in my 2004 V-drive tranny when I changed it last year, and it's what my MasterCraft manual and the Indmar engine manual calls for that year. I called the dealer, he called Hurth and they confirmed that in that transmission, they are recommending 15w40, not ATF.

These are very simple transmissions with no torque converters. I suspect it's not critical

15W40 is definitely what's recommended for the vdrives and powerslot transmissions to lessen the rattle that many owners were hearing when using ATF in these transmissions.