Mobil 1 racing 4t causing slippage? - Honda Rebel Forum
 
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post #1 of 8 Old 03-10-2020, 01:06 AM Thread Starter
 
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Mobil 1 racing 4t causing slippage?

Wondering if this is a problem oil for this motorcycle.

2001, 3rd owner, 31k on the clock. I've owned it since 20k and do 1k oil changes always using Valvoline motorcycle 10/40 conventional (blue bottle). Last oil change, wally world was out of the Valvoline so i bought this mobil 1 10/40 racing 4t motorcycle oil (liquid gold?). I do all maintenance on this bike and it is garage kept, clutch cable is and always has been adjusted properly.

The oil has been in the bike for about 1 month and 300 miles. Yesterday, I began getting slippage on cold engine only in all gears except 1st above 6k RPM.

This has happened 3 separate times (every time since being noticed), all during warmup (first 10 minutes) and all above 6k. It goes away and i cannot replicate the slippage once hot (grips tight).

I'm wondering if synthetic is too slick considering the weak springs in this bikes basket?

Are both conv/syn oils oem spec'd?

Anyone else experience this?

I'm actually tearing this bike down next week and doing a full restoration on it and have a new clutch with the tighter EBC springs (amongst a pile of other new parts). I've planned this after a 600 mile round trip to bike week and really dont want to start any part of the project before then.

Any tips? Oil swap back to conventional?

Thanks guys and gals.
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post #2 of 8 Old 03-10-2020, 09:56 AM
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The 4t oil shouldn't cause the clutch to slip, just empty your wallet.

Keepin' all the left over parts. Gonna use 'em to build another bike!

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post #3 of 8 Old 03-17-2020, 11:56 AM
 
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I had the same problem with my switch to Mobil 1, but only after the bike had pretty much setup for nearly 3 years (previous owner). After a new clutch (plates. etc.) I went back to conventional. Since my wife rides it periodically now, I believe I could go back to Mobil 1. You're not the first one on this forum that has experienced this slippage problem.

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post #4 of 8 Old 03-17-2020, 03:45 PM
 
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Had 126,000 miles on a Nighthawk 250 (same rebel engine) using mobil 1 4T with 4k change intervals and was still on original clutch, granted it was well worn with high miles. Still performed a 0-70 speedrun in 4th gear without slipping though.

Never had a problem with this oil; maybe you got a bad bottle or the clutch already had issues.
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post #5 of 8 Old 03-17-2020, 05:12 PM
 
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Quote:
Originally Posted by Darksol64 View Post
Had 126,000 miles on a Nighthawk 250 (same rebel engine) using mobil 1 4T with 4k change intervals and was still on original clutch, granted it was well worn with high miles. Still performed a 0-70 speedrun in 4th gear without slipping though.

Never had a problem with this oil; maybe you got a bad bottle or the clutch already had issues.
Dunno, other than the fact the 2014 Rebel only had 150 total miles on it when we purchased in 2018, so doubt clutch was worn out. I've heard from others too (on this forum) that a bike that has set up that long may be more susceptible to problems, if you you go to synthetic oil.

On a side, but related not, I have a '15 Kawasaki Concours with nearly 68K miles on it and it loves Mobil 1, but I've changed it periodically since the purchase and I ride it often ... never give it a chance to set up for any long period of time.

Who knows?

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post #6 of 8 Old 03-18-2020, 11:35 PM Thread Starter
 
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Thanks for the varied responses. It provides a different angle of perspective.

Quote:
Originally Posted by flitecontrol View Post
The 4t oil shouldn't cause the clutch to slip, just empty your wallet.
Agreed, I wasn't thrilled at the prospect of buying this stuff but it seems wally world is going towards carrying the full syn motorcycle oil exclusively in my neck of the woods.

Quote:
Originally Posted by dlhamil View Post
I had the same problem with my switch to Mobil 1.
Yeah, I think I'm going to just let this one burn out then replace it and use my old dino bike oil. I've got a new all plates and springs on the shelf already.

Quote:
Originally Posted by Darksol64 View Post
Never had a problem with this oil; maybe you got a bad bottle or the clutch already had issues.
Hey, 126k is admirable on one of these guys. I've only been able to clock about 70k between two rebels. I'm trying to turn at least one over the 100k mark. I'm not going to deny clutch issues but the timing of it is highly suspect in my opinion. However, it was a learner bike before I got it and it has obvious signs of it. I have put over 10k on this particular bike and it's been ridden hard since i've had it. The bikes done deals gap more than once (tail of the dragon) and has been WOT on a lot of highway, jack rabbits, etc. With all of that under its belt and a unknown clutch history prior to me, it could definitely be worn. I'll still probably pump dino oil back into it.

Again, thanks for the input guys. I'm breaking this thing down and doing some restoration work to it and have encountered some other items of concern but I'll split those into separate threads.
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post #7 of 8 Old 03-24-2020, 04:11 PM
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There is a reason for MC-specified oil; << JASO >> https://www.oilspecifications.org/jaso.php



NB! Mobil 1 for MC is different from automotive oil.
https://www.mobil.com/en/lubricants/...cing-4t-10w-40


And, if you search, you will find several "Best-OIL" articles, with different winners...
Nothing is perfect.

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post #8 of 8 Old 03-24-2020, 05:15 PM Thread Starter
 
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The 4T racing is a JASO/MA2 MC specific oil
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