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To those who have read my last post about the Royal Purple gear oil, PLEASE NOTE!!!!!

The Synchromax is NOT the warranty compliant gear oil for the 6spd manual transmission on the dart! It is GEAR MAX part# 01300

GEAR MAX: WARRANTY COMPLIANT
http://www.royalpurpleconsumer.com/wp-content/uploads/PS_Max_Gear.pdf

SYNCHROMAX: PERFORMANCE UPGRADE, MAYBE NON-COMPLIANT
http://www.royalpurpleconsumer.com/wp-content/uploads/PS_Synchromax.pdf
Do you happen to have the site, or email that states that this is Warranty compliant with FCA? My friend emailed RP about their transmission gear oil, and they said that they recommend the Synchromax for our car, but as you said was not compliant possibly. They said if warranty was an issue, to stick with Chrysler fluids. They did not mention the Gear Max, and this was back in April. I have heard a lot of great things about RP trans fluids from those who changed them, but I still have 40k on my Powertrain warranty, so I don't want to screw that up at all because I wanted to save a few bucks, and for the slightly better performance.
 
Do you happen to have the site, or email that states that this is Warranty compliant with FCA? My friend emailed RP about their transmission gear oil, and they said that they recommend the Synchromax for our car, but as you said was not compliant possibly. They said if warranty was an issue, to stick with Chrysler fluids. They did not mention the Gear Max, and this was back in April. I have heard a lot of great things about RP trans fluids from those who changed them, but I still have 40k on my Powertrain warranty, so I don't want to screw that up at all because I wanted to save a few bucks, and for the slightly better performance.
I have been running the Gear Max in my transmission for about a month or 2 and havent had any issues whatsoever... But here is the link to the website where it says "warranty" vs "non-warranty"

Which Oil Is Right for Your Vehicle? Royal Purple Lubricant Advisor
 
I have been running the Gear Max in my transmission for about a month or 2 and havent had any issues whatsoever... But here is the link to the website where it says "warranty" vs "non-warranty"

Which Oil Is Right for Your Vehicle? Royal Purple Lubricant Advisor
Well yeah you probably won't see any issues, especially after 2 months. Lol And probably never. My trans has always been a bit weird, and don't want something to fail on it, and then them blame me having not Mopar fluids in there. I can see it happening now. I see the warranty info at the bottom, but I think I will still go with Mopar for the $2 more a quart. I will however, be jealous of you all for having more superior fluid :p I do see where it says warranty compliant recommendation though!
 
Well yeah you probably won't see any issues, especially after 2 months. Lol And probably never. My trans has always been a bit weird, and don't want something to fail on it, and then them blame me having not Mopar fluids in there. I can see it happening now. I see the warranty info at the bottom, but I think I will still go with Mopar for the $2 more a quart. I will however, be jealous of you all for having more superior fluid :p
Lol that's why I went with the gear Max approved for the warranty!

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Lol that's why I went with the gear Max approved for the warranty!

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So I got a lot of fire from the Master techs who actually know their stuff. Not just the blowing hot air guys on Facebook. They state, as said earlier in this thread, that the car does not accept multi-weight oil for the trans. That probably won't be the killer. They have emails directly from them just a few months ago stating the only oil they have for our specific transmission is the Syncromax. So not entirely sure why it's also on their site to work with our car, and is also warranty compliant. If this is the case, then it's definitely not compliant, and might cause issues further further down the road.

This is something to look into, and I emailed them regarding this. I am waiting for them to reply and their response on this.
 
So I got a lot of fire from the Master techs who actually know their stuff. Not just the blowing hot air guys on Facebook. They state, as said earlier in this thread, that the car does not accept multi-weight oil for the trans. That probably won't be the killer. They have emails directly from them just a few months ago stating the only oil they have for our specific transmission is the Syncromax. So not entirely sure why it's also on their site to work with our car, and is also warranty compliant. If this is the case, then it's definitely not compliant, and might cause issues further further down the road.

This is something to look into, and I emailed them regarding this. I am waiting for them to reply and their response on this.
Please keep looking into this... I did tons of research online about gear oils and standard oils and the differences between the two (which isnt much). From everything that I found, the only difference between the straight weight and multi-weight oils is that the multi-weight oils can adapt better to temperature differences. And for us living in the midwest, I would have to say using a oil that can adapt to the severe weather changes we deal with would be better than a straight weight oil that may get extremely gooy and thick in -20degree weather. Not saying that it will cause issues with the transmission, but having an oil that will stay at a closer consistency from 90degrees+ down to -20degrees may be better for a us.

Will the synchromax help more for smoother shifts and more protection during the hotter summer days? Damn straight! But the other thing were not looking at, is that we also have to deal with extreme cold in the winter... I think that majority of people here are driving their darts as their daily... that being said, I think many people are over looking the fact that the same synchromax that is AWESOME during the summer is going to turn into a gel-like goo during the winter and be very difficult to warm up. Now, if youre cool with losing MPG and having a stiff and sticky transmission for a while till it warms up, then go for it! You should have no issues. But for those of us who want comfort all year long and a good oil that is going to help with the smoothness and protection for the tranmission, I think the gear max is the way to go.

The other thing that I found is that the Mopar gear oil does NOT have special additives in it due to the style of the synchros... As far as I could find, neither does the gear max. It states that they have their proprietary "friction modifier formula" but that seems to come in ALL Royal Purple oils... Again, I understand that the Master Techs say that youre not supposed to use anything but the manufacturers own design for everything on the car... But when has that stopped anyone here from doing something different? I honestly cant imagine that the Dodge dart has THAT special of a transmission to where if you use something other than the Mopar brand oil and or a straight weight oil that it will have issues. But then again, I have been wrong before...

So, keep us updated with what you find! I'd like to hear exactly why we cant run something from a company that states their gear oil is warranty spec.
 
Please keep looking into this... I did tons of research online about gear oils and standard oils and the differences between the two (which isnt much). From everything that I found, the only difference between the straight weight and multi-weight oils is that the multi-weight oils can adapt better to temperature differences. And for us living in the midwest, I would have to say using a oil that can adapt to the severe weather changes we deal with would be better than a straight weight oil that may get extremely gooy and thick in -20degree weather. Not saying that it will cause issues with the transmission, but having an oil that will stay at a closer consistency from 90degrees+ down to -20degrees may be better for a us.

Will the synchromax help more for smoother shifts and more protection during the hotter summer days? Damn straight! But the other thing were not looking at, is that we also have to deal with extreme cold in the winter... I think that majority of people here are driving their darts as their daily... that being said, I think many people are over looking the fact that the same synchromax that is AWESOME during the summer is going to turn into a gel-like goo during the winter and be very difficult to warm up. Now, if youre cool with losing MPG and having a stiff and sticky transmission for a while till it warms up, then go for it! You should have no issues. But for those of us who want comfort all year long and a good oil that is going to help with the smoothness and protection for the tranmission, I think the gear max is the way to go.

The other thing that I found is that the Mopar gear oil does NOT have special additives in it due to the style of the synchros... As far as I could find, neither does the gear max. It states that they have their proprietary "friction modifier formula" but that seems to come in ALL Royal Purple oils... Again, I understand that the Master Techs say that youre not supposed to use anything but the manufacturers own design for everything on the car... But when has that stopped anyone here from doing something different? I honestly cant imagine that the Dodge dart has THAT special of a transmission to where if you use something other than the Mopar brand oil and or a straight weight oil that it will have issues. But then again, I have been wrong before...

So, keep us updated with what you find! I'd like to hear exactly why we cant run something from a company that states their gear oil is warranty spec.
They actually are not recommending against manufacture stuff. They actually recommend the Synchromax lol But here is the kicker. Royal Purple is wrong. So here is exactly why you shouldn't run it.



Soooooo I'd contact them if I were you. Possibly they will give you a refund on the oil. And, you are probably right about all of the above. It is probably FINE to run it, and better in winter. But you could 1) get your money back at least since this is their mistake, or 2) use the money to replace with another type.

So they don't recommend using it, and is not in Manufacture spec!
 
They actually are not recommending against manufacture stuff. They actually recommend the Synchromax lol But here is the kicker. Royal Purple is wrong. So here is exactly why you shouldn't run it.

View attachment 102546

Soooooo I'd contact them if I were you. Possibly they will give you a refund on the oil. And, you are probably right about all of the above. It is probably FINE to run it, and better in winter. But you could 1) get your money back at least since this is their mistake, or 2) use the money to replace with another type.

So they don't recommend using it, and is not in Manufacture spec!
Man... thats terrible... What a bad day today, nothing but bad news all around... The gear oil im using wasnt listed correctly, largest mass shooting in US history, Tom Petty dies and now reports of more shooting at USC. WTF...
 
Man... thats terrible... What a bad day today, nothing but bad news all around... The gear oil im using wasnt listed correctly, largest mass shooting in US history, Tom Petty dies and now reports of more shooting at USC. WTF...
this has just been a bad year period.
 
They got back to me in just a few hours (during the day). You will probably hear back from them tomorrow!
Still nothing from them... I asked for a refund or a replacement couple bottles of synchromax so I wouldn't be surprised if they just ignore me.

*EDIT*

I guess I spoke too soon lol... literally after I wrote the message above Cody emailed me and said they would be happy to replace the Gear Max with 2 bottles of Synchromax! I guess I get a little impatient sometimes... :saint:
 
Still nothing from them... I asked for a refund or a replacement couple bottles of synchromax so I wouldn't be surprised if they just ignore me.

*EDIT*

I guess I spoke too soon lol... literally after I wrote the message above Cody emailed me and said they would be happy to replace the Gear Max with 2 bottles of Synchromax! I guess I get a little impatient sometimes... :saint:
Good news! Well at least they have a great customer support. Cody seems to be the guy that replies to everyone. I am sure they don't get tons of emails, so it's probably just him lol

Let me know when you do the swap and if there is any difference. I feel like it will probably be the same. I just ordered my Synchromax on amazon, and did the refund on the Gear Max. Just need to ship the first ones back for my refund. The Synchromax is cheaper too! I am so excited to change mine. I just don't want to do it lol
 
Good news! Well at least they have a great customer support. Cody seems to be the guy that replies to everyone. I am sure they don't get tons of emails, so it's probably just him lol

Let me know when you do the swap and if there is any difference. I feel like it will probably be the same. I just ordered my Synchromax on amazon, and did the refund on the Gear Max. Just need to ship the first ones back for my refund. The Synchromax is cheaper too! I am so excited to change mine. I just don't want to do it lol
I will definitely let you know when I change it... Again... Lol

But just so you know, it can be a pita to change...

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Almost 6 months after, does anybody have any new updates on your trannies with any of the aftermarkets oils? I'm at 48k and want to replace my fluid as I'm nearing the 50k, also ever since I got the car, there's been an oil stain at the engine/tranny marriage site and shifting is not as it was on day 1 and as usual, the dealer says its normal >:/ anywho I've been reading here and there, and the RP synchromax seems like the winner. I also emailed RP and asked what they meant by the synchromax being recommended for manual trannies that require ATF, any insight on that?
 
Almost 6 months after, does anybody have any new updates on your trannies with any of the aftermarkets oils? I'm at 48k and want to replace my fluid as I'm nearing the 50k, also ever since I got the car, there's been an oil stain at the engine/tranny marriage site and shifting is not as it was on day 1 and as usual, the dealer says its normal >:/ anywho I've been reading here and there, and the RP synchromax seems like the winner. I also emailed RP and asked what they meant by the synchromax being recommended for manual trannies that require ATF, any insight on that?
Well I have been running the gear Max for this long and have had zero issues. Royal purple was also nice enough to send me 2 qts. Of the synchromax since the gear Max techinally isn't the "warranty replacement" for the darts manual transmission. I would have to say that either or fluid from royal purple will be fine for your dart. The gear Max would be better for the people who live in colder climates so the fluid doesnt turn too thick in the winter and the synchromax for those who live in warmer climates so the fluid doesn't get too thin during the summer.

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Discussion starter · #60 · (Edited)
Been running the RP synchromax for around 10 months/7k miles, only complaint is it is stiff in super cold weather, say below 20°F(to be expected) Just been taking it easy for the first couple miles and it's fine after that.
Glad I made the switch, hope that helps.

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