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Old 07-03-2016, 10:50 PM   #1
jbfla   jbfla is offline
 
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Oil Change #6




Still a bit of sludge with iron/steel particles buried within:




Nearly lost the crush washer again:




CSC recommended 20w 50 oil to me.

This is what I had on the shelf, left over from H-D days:




Old oil will be sent for analysis. Results in a couple of weeks.

jb
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Old 07-07-2016, 09:19 AM   #2
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$7.50 for Vtwin oil! How the heck did you find that deal?? Seriously!

As for oil analysis, I have sent in 2 test. One at 200 and the other at just over 500. I have attached the results. I will send another one out at 2500 miles. I figured that way we see the true break in and 2nd valve check as well.

From what Blackstone says, so far so good!
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File Type: jpg Screenshot 2016-07-07 at 9.16.42 AM.jpg (20.1 KB, 476 views)
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Old 07-07-2016, 10:43 AM   #3
jbfla   jbfla is offline
 
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Quote:
Originally Posted by madsocial View Post
$7.50 for Vtwin oil! How the heck did you find that deal?? Seriously!
It was a closeout sale at Walmart. I bought all they had.


Quote:
Originally Posted by madsocial View Post
As for oil analysis, I have sent in 2 test. One at 200 and the other at just over 500. I have attached the results. I will send another one out at 2500 miles. I figured that way we see the true break in and 2nd valve check as well.

From what Blackstone says, so far so good!
I was unable to read the small print....old eyes.

What was the % of fuel in the oil?

Did Blackstone make any comments on the report?

Thanks.

jb
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Old 07-07-2016, 12:08 PM   #4
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HA! sorry about that, not sure why it didn't show up big! All the pictures are usually oversized and this one wasn't. I can't read it either lol.

Here's what it says: "OIL USE INTERVAL: UNIT CLIENT COMMENTS

RANIA: This run was more than double the length of the last one, yet wear metals dropped - those are

results we like to see! Copper, showing brass/bronze wear, did increase by 2 parts per million, but that's an

element that takes a long time to wash out of an engine, so we'll look for it to go down next time. At this

point, we'd say this Zongshen looks pretty good. Fuel contamination dropped below our cautionary level,

and is now at a harmless quantity. The low viscosity is fine too. So far so good for this adventure bike. Just

keep up the good maintenance!"


The fuel was only. 1.8%
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Old 07-09-2016, 09:49 AM   #5
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1.8 is excellent !
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Old 07-09-2016, 07:10 PM   #6
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Old 08-12-2016, 10:24 PM   #7
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Here's the oil analysis for oil change #6:



The two things I was interested in:

The aluminum in the oil has gone from 30 down to 11...

The % of fuel in the oil went up, from 3.8 to 5.5.

Blackstone says the amount of fuel in the oil greater than 2% is cause for concern.

In the CSC Blog of May 16, Joe Berk says 4% to 5% is OK.

http://californiascooterco.com/blog/?p=21425

Who should I believe?

jb
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Old 08-12-2016, 10:53 PM   #8
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analizing the oil is great but it can make you
think there are issues that really are not there..

i wouldn't be surprized if all my bikes had higher totals than
what you are seeing in yours...And the motors will still
last for 1000s of miles....
i think the real probs would start if the oil / filter changes were
not done....


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Old 08-13-2016, 10:52 AM   #9
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When the 'fuel in oil' first came up we beat the issue to death. I finally found an engineering paper that addressed the issue. Bottom line: 5% fuel in the engine is the point where you need to get concerned. I just switched to a 90C thermostat (70C is what came on the bike) but have not put any miles on the bike since that swap. I'm waiting for (1) cooler weather and (2) some minor body clips so I can reinstall all the plastic. In the meantime I plan to change the oil more frequently until it starts to show less than 4-5% fuel in the oil. I believe the issue is two fold: engine still breaking in and engine running too cold. My bike only has 1700 miles on it.

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Old 08-13-2016, 11:03 AM   #10
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Thanks for your insight, Peter.

At 5,000+ miles, I think my engine is run in.

I'm interested in the results of the 90C thermostat.

My uneducated thoughts are that the oil should get hot enough to "boil off" or vaporize the gas in the oil.

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Old 08-21-2016, 04:28 PM   #11
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What oil change intervals have yall been doing? Every 2k after the 2nd change at 1000? If I switch to full synthetic can I extend that?
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Old 08-21-2016, 11:52 PM   #12
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Quote:
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What oil change intervals have yall been doing? Every 2k after the 2nd change at 1000? If I switch to full synthetic can I extend that?
I've been averaging every 1,000 miles, but that is because I'm concerned about the fuel in the oil.

I am hoping it will stabilize soon so I can go to 2,500 mile intervals, when I will also do a valve check.

I use synthetic oil.

jb
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Old 08-22-2016, 07:19 PM   #13
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I rode an event this weekend with my dual sport club. They know I'm the guy with the RX3 even though I was on my XR650R. One guy made mention of the fuel in the oil.......I asked how he knew that was an issue and he said that he was interested in buying one so he looked them up on the forum. He listed that as reason to not pull the trigger. I told him for what its worth my oil never smells like gas in RX3.
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Old 08-22-2016, 10:03 PM   #14
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CS, it's odd that the fuel-in-oil only comes up in a few machines. I suspect the problem sorts itself out over time since Zong has made a bazillion of these bikes without having wholesale failures. It could be that we are aware of it because we sent oil samples in for analysis. Someone may well find a similar situation if he sent in an oil sample from brand XYZ.

The guy you talked to might just have been looking for an excuse to dislike the Zong. Show me any brand of motorcycle and I can show you a fatal flaw...if you believe the forums. In the meantime, I'll ride mine and smile.

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