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In my last 3 bikes (including my VTX) I’ve primarily used Motul 7100 which aside from the somewhat higher price tag I’ve never had any complaints or issues. Despite hearing great testimonials about Rotella T6, is it not an application that’s specifically made for Diesel motors? Nowhere on the bottle nor on their website does it indicate anything about motorcycles. I’ve also heard that apparently the quality of this brand is not as good as it once was & some anecdotal evidence of folks complaining it’s been causing clutch slippage.

Would it not make more sense that if the Rotella was that good for wet clutches the company wouldn’t capitalize on it & market the product for motorcycles? Did someone, somewhere one day just use Rotella & made this discovery that apparently it’s the best thing you can put in your crank case?

If anyone knows the answer to this I’d be really curious to know. I don’t have any brand loyalty to any product/manufacturer, I just stick to what I know works best for me.
 

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1800 has weak clutch springs, that is the problem with the clutch.
Many different oils used and clutch still slipped.
Do not blame it on the T6.

Diesel engine with many gears for various devices, good for the VTX engine & transmission (oil shear stability).
 

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Rotella is JASO-MA specd' and therefore is specified by Honda for use with the VTX clutch. Many Harley owners use T4 in their primary with no ill effect on the clutch.


People love to over think oil. It's one of those things that people think makes a bigger difference than it really does. Many VTX owners have used the cheapest automotive 10W40 they can find, without ill effect to the motor or drivetrain. I prefer, always have, fully synthetic oil ... helps me sleep nights. My son's V4 VFR specifically forbids synthetic oil, so he uses Rotella T4. That V4 runs way harder than your VTX ever will, and it has well over 80,000km on it now. It still runs like new. My point is that most of what you hear about oil is anecdotal but there are many who use T4 and T6 exclusively and swear by it. IMO it's great oil for bikes.
 

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Can’t help with Rotella...but..I used amsoil till I lost my connection....very happy with Mobil 1 and Bosch 3323...good luck on your choice....
 

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I have been using Rotella T6 for the past 40K between 2 bikes, my Shadow Aero 750 (22k) and my VTX 1300 (18k).
I used Dino oil on my Aero the first 2 oil changes since i bought it brand new (first 4 K), could have just gone 1k for the break-in but i went 1 more.
Never had a negative issue with T6 and i have never burned oil at all. Bike runs "happy" with T6.

Having said that, i have been contiplating using a different synthetic, perhaps Mobil One or one of the other high end formulas once to just compare and see for myself. :doorag:

Like an occasional bottle of champagne, as a Treat for the bike... lol
 

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When I purchased my bike from the original owner, it came with a fresh oil change using the best Honda brand oil from the dealer.

I ran that oil about 5000 miles and replaced it with Rotella T6.

It was a good price for a gallon at Wal-Mart.

It seems to work fine.
 

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I've used RT6 a couple of times in my VTX with no ill effect. I also used Mobil 1 Turbo Diesel, which is the Mobil version of T6, for a couple of years and it also did just fine. That's what I use in my 6.5 TD Suburban and I always have plenty on hand. Unlike RT6, the M1TD does not have the JASO seal on the jug, but that doesn't mean a whole lot really, just that Mobil chose not to pay the big bucks to have the JASO certification and endorsement done on their diesel engine oil. I've since moved on to Mobil 1 Racing 4T motorcycle oil for the VTX.
 

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Hey guys, thinking about using this
Mobil 1 96936 20W-50 V-Twin Synthetic Motocycle Motor Oil. Arizona is hot.

Thoughts?
 

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Hey guys, thinking about using this
Mobil 1 96936 20W-50 V-Twin Synthetic Motocycle Motor Oil. Arizona is hot.

Thoughts?
It won't hurt, but really, the engine, once warmed up, runs at whatever temperature the thermostat tells it to run at. A water cooled bike doesn't really see the benefit of higher viscosity oil that an air cooled bike would. I guess what I'm saying is that the benefit of doing this is arguable ... and to be certain, many will argue one way or the other. It certainly wouldn't hurt to try it in warmer regions. Try it and let us know if you notice the difference once the engine is hot.
 

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Earl, I am not sure who your question was directed to but since I may be one of the few using Mobil Delvac 15-40
I am still rolling along with it.
Looks like ten oil changes with Mobil Delvac 15-40
192,882 VTX miles
 
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I think you can read all you want, different opinions, but how does the transmission feel, do you add oil between changes. That is what I go by. So no Rotella for me or the car mobil. Had to add oil. Not with motorcycle synthetic for me. Others have different results. Don't know why.
 

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... Unlike RT6, the M1TD does not have the JASO seal on the jug, but that doesn't mean a whole lot really, just that Mobil chose not to pay the big bucks to have the JASO certification and endorsement done on their diesel engine oil. I've since moved on to Mobil 1 Racing 4T motorcycle oil for the VTX.
Not sure but I am doubtful any Rotellas have the JASO seal nor that it paid for it's approval. There are "specifications" that can be met and then there are "approvals". JASO writes the specifications and only it can approve MA, MB, and MA2 ratings for motorcycles. MA is what is appropriate for the combined clutch/gearbox in a VTX, MB is for like my BMW LT that doesn't have the clutch in the gear oil (but not to be confused with the MB Approval 228.31 which is approved by Mercedes Benz), and MA2 which is for a wet clutch bike with a catalytic converter. You can write/call Shell but I think they will say that through their "own" testing they meet the JASO MA specifications but they haven't submitted for approval by JASO.

Here is a list of current JASO MA, MA2, MB approved oils, August 2019, no rotellas listed.
http://www.jalos.or.jp/onfile/pdf/4T_EV_LIST.pdf

To be JASO approved they need to display the seal shown below, personally I've never seen the seal but I've only been using the shell tested "meets specification" oil, for me that is currently Rotella T Triple Protection at $3.50/qt. I had the Rotella T tested from my vtx by Blackstone Lab. Never took it out to its end rating but they had me going over 10K miles with some TBN still remaining. That was good enough for me because I wanted to be able to take a 10K trip without worrying about the oil.

In the shell T6 labeling it looks to me they are claiming to meet the MA, MA2 rating but not specifying approval.
 

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