Help! Accidentally mixed synthetic and mineral oil when changing my oil. - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 12 Old 04-30-2013, 10:01 PM Thread Starter
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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)

Hi I'm David, a 27 year old entrepreneurial Eagle Scout headed from Seattle => Tierra Del Fuego
Riding Rosie, a 2005 red DL-650 I bought for $3400 and 30K "warmup" miles
Leaving: August 25th 2011; Returning -----> ???
Follow my journey at [URL="http://www.davidparkinson.com"]http://www.davidparkinson.com[/URL]

Last edited by arooni; 04-30-2013 at 10:21 PM.
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post #2 of 12 Old 04-30-2013, 10:33 PM
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They do fine together. Unless you're looking for an extended interval before the next oil change, run what you have.

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post #3 of 12 Old 04-30-2013, 10:38 PM
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There is one thing that you MUST immediately do! Begin NOT WORRYING about it immediately! You still have a mix of good oils in there, and, at 20w-50, it surely won't be shearing down to too thin any time soon. Run it your normal OCI, and use your extra worrying energy on something that actually needs attention. You will do no harm by leaving everything just as it is.
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post #4 of 12 Old 05-01-2013, 09:43 AM
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Have used aircraft mineral oil in airplane piston engines after engine rebuild without problems.

Bill
2008 DL650

Last edited by exploring/carolina; 05-01-2013 at 09:45 AM.
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post #5 of 12 Old 05-01-2013, 10:04 AM
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Part of the engine oil standards, whether API or JASO or ACEA or ILSAC is that they are completely compatible with other oils. Mix any suitable engine oils and you're OK. You might not get the full benefit of a total fill of either oil, but you won't have damage.

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post #6 of 12 Old 05-01-2013, 11:52 AM
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AND whatever you do . . .

DON'T pressure wash the filter!

L2V -- she's a stocker!...and gone...
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post #7 of 12 Old 05-01-2013, 12:28 PM
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I spent some time in Argentina several years ago, but never made it to Bariloche. I would love to ski there. You should hang out there for a couple of months so you can go skiing!

Don't worry about the oil--but do worry about buying some "Alfajores" and eating some for me. I was addicted to those things. It would be great if you could post of pic of you eating them on your bike with the mountains of Bariloche in the background. (That's not too much to ask is it? )

Enjoy Argentina

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post #8 of 12 Old 05-07-2013, 11:16 PM
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Don't worry about the oil.

2007 dl650
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post #9 of 12 Old 05-08-2013, 07:13 AM
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Quote:
Originally Posted by PTRider View Post
Part of the engine oil standards, whether API or JASO or ACEA or ILSAC is that they are completely compatible with other oils. Mix any suitable engine oils and you're OK. You might not get the full benefit of a total fill of either oil, but you won't have damage.

^^^^^
Yup, right on
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post #10 of 12 Old 05-13-2013, 04:22 PM
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Most automotive/motorcycle oil nowdays are a blend of base oil (derived from crude oil) and synthetic oil. Synthetics need to be added to the oil to meet increasingly stringent specifications. I am told by oil suppliers that it can be between a 5% and 50% synthetic right out of the bottle depending on viscosity, brand, or recommended change interval the oil is. That is what your SemiSynth Bel-Ray is, a blend. So there is no problem mixing the two as long as the viscosity and specifications are OK with your machine.
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