Re:Royal Purple Synchromax - K-Bikes.com - Excellence in Motion
 
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post #1 of 10 (permalink) Old Sep 22nd, 2010, 7:30 am Thread Starter
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Re:Royal Purple Synchromax

Has anybody used Royal Purple Synchromax in there transmissions? I just changed out my trans fluid yesterday and put that into my bike, but haven't ridden it yet. I use Royal Purple Oil in the crank case and I've been using their Gear Max for the diff. So I just took the last step for the transmission but would like some feed back if anybody else has used it? The bike is a 2002 K12RS with 16000 on it. :-)
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post #2 of 10 (permalink) Old Sep 26th, 2010, 9:45 pm
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I haven't put any RP products into my RS, but I have used their oil in my Kaw for over ten years and 65K miles, and RP gear oil in the tranny of my Sporty. I have had no signs of any failures or undue wear. I think they make very high quality products and any laboratory test I have ever seen has rated their products at or very near the top. I haven't changed any gear lubes in the RS yet ('03 bought in Feb, 15K mi), but I may well use RP products when I do.

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post #3 of 10 (permalink) Old Oct 7th, 2010, 10:13 am Thread Starter
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Re:Royal Purple Synchromax

Good to know! My concern was that it didn't seem "thick" enough, it just looked so thin to me that I wasn't sure I was putting the right thing in? I've had in a few weeks now and it does seem to shift a lot more positive and smoothly. We just changed my wifes 2000 R1100S out to the same thing and she's already noticing a difference, and on a side note her transmission took quit a bit more oil then ours do? Our bikes take almost 3/4 of a qt. (600 CC) and her's took 1.1 qts. I thought they had the same exact transmission? Live and learn. :-)
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post #4 of 10 (permalink) Old Oct 7th, 2010, 12:12 pm
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First, In a totally unrelated discussion with a pretty good service manager at a local dealer. He said that unless a customer demands synthetic in the transmission they will NOT use it for the RS/GT series. Their experience was the tranny seals tend to fail due to the design perimeters based upon dino oil and not synthetic. With 9 hrs labor they want to avoid that for the customer. So they put synth in everything newer and heartly recommend but strongly resist synth in the RS/GT transmission. Their words and conclusions.

So I looked at Royal Purple and the Synchromax to see if it was synthetic. What I read was
"Synchromax is recommended for manual transmissions that specify an automatic transmission fluid."

Should you have used their Max Gear product in a suitable weight?

Are you absolutely sure you got the right RP product for your need?

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post #5 of 10 (permalink) Old Oct 9th, 2010, 5:40 am
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If it was thin chances are you put the oil used for manual transmissions that require ATF....You really should get that out of there! or double check the specs.
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post #6 of 10 (permalink) Old Oct 12th, 2010, 1:38 pm Thread Starter
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Re:Royal Purple Synchromax

On the side of the bottle it very specifically says for use in motorcycles, plus I think I read on this very forum some years ago that it came highly recommended?
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post #7 of 10 (permalink) Old Oct 12th, 2010, 2:34 pm
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You better go study their website carefully.

http://www.royalpurple.com/transmission-chart.html

Or this:
http://www.royalpurple.com/gear-oil-m.html

Nowhere in there does it says that you can replace API GL-5 specs oils with Synchromax, quite the contrary. Max-Gear yes, not Synchromax.

It may say on the bottle "for use in motorcycles"......but which motorcycles?????

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post #8 of 10 (permalink) Old Oct 14th, 2010, 5:27 pm Thread Starter
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Re:Royal Pruple Synchromax

Alright I just did what I should have done in the 1st place, I called Royal Purple and had a very nice conversation with a tech. Yes you are all correct in the fact that that is not the proper weight oil for our transmissions, but he said that Synchromax is designed to compensate for such errors in judgment but I would definitely know if something was going wrong, he did however suggest that I change it over to Gearmax, so that is what I'm going to do. Thank you again for your helpful insights and suggestions. :-)
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post #9 of 10 (permalink) Old Oct 14th, 2010, 7:19 pm
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Quote:
Originally Posted by 007007
but he said that Synchromax is designed to compensate for such errors in judgment but I would definitely know if something was going wrong, :-)
I don't think I want to know what he really meant by that..... I have seen the insides of my tranny, nothing I'd like to throw money at "if something was going wrong"

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post #10 of 10 (permalink) Old Oct 15th, 2010, 10:10 am Thread Starter
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Re:Royal Purple Synchromax

I hear ya! But it's not quite what you think. The trans would either be quite hot and you'd feel it down by your foot, or it would wine our clunk in every gear and absolutely nothing like those things where going on. BMW WAY over engineered this transmission and I know I'm not hurting anything as it got smoother and quieter so that tells me the oil was doing it's job, but I'm still going to change it out to the Gearmax. :-)
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