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Old 04-30-2013, 07:02 PM   #1
arooni OP
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Help! Accidentally mixed synthetic and mineral oil when changing my oil.

Hi everyone!

Hope you're doing well. I've already hit Ushuaia, and now I'm on my way farther north in a city called Bariloche towards Buenos Aires.

I headed down to the moto shop and bought what I thought was 3 liters of 20/50 semi synthetic Bell Ray Oil. Well after I had already got rid of the old oil, put on the new oil filter, and had filled the oil to the right level, I discovered to my horror, THAT ONE OF THE 3 LITERS WAS NOT SEMI SYNTHETIC BUT WAS ACTUALLY MINERAL OIL!

After I had added two liters of semisynth oil I turned the engine for a few minutes to suck the oil into the filter so I could get the oil level right. To my knowledge, I have never actually turned the engine on with the synth/mineral mix.

SemiSynth Oil: BelRay EXP 20W-50 (API/SM JASO MA2)
Mineral Oil: BelRay EXL Mineral 20W-50 (API SM / JASO MA2)

My plan is to drain all the oil, take off the filter, and try to pressure wash the filter (even though I believe that there was only semisynth oil there.

Questions:
1) Would you do anything differently than my plan above?
2) How serious is this mistake?
3) How can I best clean the oil filter? Do I need to replace it?

Best,
David (from beautiful Argentina)
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I'm David, a 28 year old Eagle Scout headed from Seattle => Tierra Del Fuego
Riding Rosie, a 2005 red DL-650 I bought for $3400 with 30K "warmup" miles
Leaving: August 25th 2011; Returning -----> ???
Follow my journey at http://www.davidparkinson.com

arooni screwed with this post 04-30-2013 at 07:22 PM
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Old 04-30-2013, 07:17 PM   #2
kirb
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I wouldn't have bothered to do anything but maybe change the oil sooner. Semi-synth is kind of the same thing as mixing synth and regular oil. Most synth oil is fully compatible with mineral oil.

I don't think you have anything to worry about as long as the requirements of your bike match the lowest rating of the oil used. Make sure the oil used is also able to be mixed together (usually says on the container)

Quote:
Originally Posted by arooni View Post
Hi everyone!

Hope you're doing well. I've already hit Ushuaia, and now I'm on my way farther north in a city called Bariloche towards Buenos Aires.

I headed down to the moto shop and bought what I thought was 3 liters of 20/50 semi synthetic Bell Ray Oil. Well after I had already got rid of the old oil, put on the new oil filter, and had filled the oil to the right level, I discovered to my horror, THAT ONE OF THE 3 LITERS WAS NOT SEMI SYNTHETIC BUT WAS ACTUALLY MINERAL OIL!

After I had added two liters of semisynth oil I turned the engine for a few minutes to suck the oil into the filter so I could get the oil level right. To my knowledge, I have never actually turned the engine on with the synth/mineral mix.

My plan is to drain all the oil, take off the filter, and try to pressure wash the filter (even though I believe that there was only semisynth oil there.

Questions:
1) Would you do anything differently than my plan above?
2) How serious is this mistake?
3) How can I best clean the oil filter? Do I need to replace it?

Best,
David (from beautiful Argentina)
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Old 04-30-2013, 07:20 PM   #3
luckychucky
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Ky

I figure it's like KY, if it's slick it can't hurt. But I'm not a mechanic. Really what can it hurt? It's metal not a babies butt.
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Old 04-30-2013, 07:22 PM   #4
GrahamD
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+1.

What you have now is semi synth oil. Just a bit more semi than you wanted.

As long as it has oil and it is not ridiculously out of spec, it will be fine. Just change a bit sooner if you want next time.
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Old 04-30-2013, 07:26 PM   #5
Andyvh1959
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First some clarity. Some people think of non-synthetic oils as mineral oil, or oil that is petroleum based. Standard "mineral based" automotive oil can be thoroughly mixed with synthetics with no ill effects. If that is the case then don't worry about it and run it as is.

However do you really mean true mineral oil, which is usually clear and has most uses as transformer oil, or electrical component oil. Like I said, real "mineral oil" is clear and of a fairly low viscosity rating. Also, it won't have the additive packages common to mineral based automotive oils. If that is the case, then I'd not worry about it much beyond changing it as soon as you can. Its not like you're mixing ATF and engine oil, or using multi-vis oil in a 2-stroke.

Kind of like the old saying, "any oil is better than no oil and old oil is better than none."

Don't do anything to the filter, it doesn't care what kind of oil went through it.
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Andyvh1959 screwed with this post 04-30-2013 at 07:40 PM
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Old 04-30-2013, 07:26 PM   #6
smilin'Ed
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This is not an issue. The oils are miscible and either version is better than most would put in a DRZ. I used to run Rotella T in my KLR, the same oil we put in the diesel engines in the shop.

Just leave it in there and change at the next regular interval.
What problems do you forsee by running the mix as it is?

E
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Old 04-30-2013, 07:48 PM   #7
villageidiot
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I'd probably say something like "fuckit run it"
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Old 04-30-2013, 09:42 PM   #8
kirb
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This doesn't really help your situation, but I was at a dealer where a guy grabbed some yamalube off the shelf for an FJR oil change. He used 80-90 in the crankcase and went on a 2000 mile trip before he figured it out.
No damage. Everything was fine.
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Old 04-30-2013, 10:21 PM   #9
MariusD
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This thread smells of a joke just to see what responses will be provided....
If the OP is genuinely asking, the answer is simple: your bike will never know the difference and u should lose not 1 second of sleep over the mix. You will be completely fine. Leave it as is.
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Old 05-01-2013, 01:22 AM   #10
arooni OP
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Quote:
Originally Posted by MariusD View Post
This thread smells of a joke just to see what responses will be provided....
If the OP is genuinely asking, the answer is simple: your bike will never know the difference and u should lose not 1 second of sleep over the mix. You will be completely fine. Leave it as is.
Definitely not a joke. It happened, and seeing as I've heard it's not good to mix synth and mineral oils in the past, I'm noticiably concerned, especially as I plan to ride the bike up through Uruguay/Brazil/Venezuala and don't want to mess up the motor which has been running great.
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I'm David, a 28 year old Eagle Scout headed from Seattle => Tierra Del Fuego
Riding Rosie, a 2005 red DL-650 I bought for $3400 with 30K "warmup" miles
Leaving: August 25th 2011; Returning -----> ???
Follow my journey at http://www.davidparkinson.com
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Old 05-01-2013, 02:59 AM   #11
joef
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Like all the above its fine, just change it a bit sooner
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Old 05-01-2013, 04:59 AM   #12
falcn
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Regular dyno oil and synthetic can be mixed with no problem. You are fine. Ride it and forget it.
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Old 05-01-2013, 05:23 AM   #13
martīn
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Sorry, but I thought it was a joke as well!

Well, I have the same bike, a red v-strom from 2005 and run pretty much every kind of oil in it. Mineral, semi and synthetic, whatever is cheap and nearby. The bike doesnīt care, so stop worrying and ride on.
It would be overkill and a total waste to drain the oil and put some new on!
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Old 05-01-2013, 06:42 AM   #14
MariusD
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Quote:
Originally Posted by arooni View Post
It happened, and seeing as I've heard it's not good to mix synth and mineral oils in the past, I'm noticiably concerned... .
I'm curious what reliable source did you hear this from?

While tolerances in today's engines are a little tighter than in older vehicles, as long as you use the same (or close) thickness of oil, the mix of sythetic vs mineral should have zero impact on engine components.

You're definitely fine bud.
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Old 05-01-2013, 06:59 AM   #15
blkhrt81
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Somewhere, and bugger me if I remember where, I did hear that mixing full synthetic and regular oil was not recommended, I think because of a possible emulsion problem. The same place though said that semi-synthetic was compatible with regular oil.
I be in the " run it and change again at a slightly shorter interval" camp
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