Well here it is. 199,000 miles, and another UOA. Here is my first UOA with this vehicle, using Mystik 15w40. Here is the VOA for the Mystik JT-8 10w30 I used. I did do a lot of lead footed city driving toward the end of the sample, and that probably explains the low flash point and fuel dilution. We'll see what it does next sample.

Also, I started a test last time I changed the oil. I cleaned out the K&N air filter I'm using. Silicon went up 1 ppm. It's 12 now. Big deal. I hardly see this as a problem. Obviously cleaning K&N filters doesn't let through huge amounts of dirt. And yes, I did drive on gravel.

I'm gonna try 4000 miles next time like they recommend and see what happens. So I'll put forth the question BrianA has been asking for quite a while:

Why would I ever use synthetic?

Here are the comments:
"Potassium and sodium both dropped down in this sample. As we stated in the last report for this engine, even if these elements are from antifreeze, this amount isn't enough to hurt anything. Chances are they could be an additive in the oil you are using. Your wear is about the same as last sample, with only lead (from bearings) showing a slight increase, but still at an average level. The TBN read 4.3, showing plenty of additive remaining (a TBN of 1.0 is low). The 1.0% of fuel could be from city driving. Try running 4,000 miles for the next sample."

Here's the data:
ALUMINUM:3
CHROMIUM:1
IRON:16
COPPER:5
LEAD:4
TIN:0
MOLYBDENUM: 13
NICKEL:0
MANGANESE:0
SILVER:0
TITANIUM:0
POTASSIUM:8
BORON:6
SILICON:12
SODIUM:10
CALCIUM:3245
MAGNESIUM:228
PHOSPHORUS:1179
ZINC:1320
BARIUM:0

SUS Viscosity: 61.5
Flashpoint in F: 370
%Fuel: 1%
Antifreeze: 0
Water: 0
Insolubles: 0.3%

Universal averages:
ALUMINUM:4
CHROMIUM:1
IRON:17
COPPER:6
LEAD:4
TIN:2
MOLYBDENUM:40
NICKEL:0
MANGANESE:1
SILVER:0
TITANIUM:0
POTASSIUM:2
BORON:45
SILICON: 9
SODIUM:20
CALCIUM:1985
MAGNESIUM:244
PHOSPHORUS:754
ZINC: 904
BARIUM:1

 

I would not run synthetic in that engine either Rusty .

The poor ring seal is what's knocking your flash point down with rather high insoluables at those low miles . It's not fuel in the oil . Synthetic would be a waste in this engine .

These analysis's posted here and in the past are only as good as one can interpit them . For most people I'd recommend saving your money as analysis just drives up the cost of ownership .

Please do not take offense .


Also , there is something else wrong with your engine , study the analysis well .

 

I mean't to say fuel in the oil from a normal sense like a lower mile engine might show with extended idling , short trips bad injector ect .

 

Well look at the last analysis. Flashpoint was 425! Maybe I'd be better off to run the 15w40 in it?