Blackstone results: Oil in coolant?

A6 All/ S6 All
#1

Hey all. I’ve read through a couple of other posts regarding oil and coolant and I seem to see a consensus of ‘Oil Cooler Issues.’

My Blackstone results are below with my last 2 oil changes.

http://audirevolution.net/addons/albums/images/949229989.png

Is the oil cooler my likely go to as well? I see no visible drop in coolant level at all and I see no oil in the coolant, or coolant in the oil when doing my oil change. So, I assume this must mean a very very small loss of coolant.

Also, on a side note, what does the silicon level have to do with air filtration? They mentioned it in their report but didn’t really explain.

Thanks!

#2

https://www.machinerylubrication.com/Read/89/silicon-engine-oil

#3

My silicone is a lower number than normal. I take that as indicating a lower amount of silicon, not an abundance. If there was a filtration issue, wouldn’t it be higher?

#4

Are you consuming coolant? if you are enough that you have to top off the coolant between the oil changes. If you don’t see any dripping out and you don’t see any crystals on the back of the motor on the coolant tube transfer area I would say seriously look into the oil cooler.

You get a small weeping in the oil cooler and its not always something you can spot with the eye. Its worth looking into and changing if you haven’t already.

Filtration issues silicon present. As dirt gets into the motor the level of silicon goes up. There is almost always a direct relationship between the two. BUT as that happens the ware rate can increase as well as you have small parts of abrasive material in the oil.

So check your air filter if its a K&N make sure to either get a new one or make sure the one you have is oiled well and that there are no gaps in the air box letting air by the filter.

Also since these cars are do difficult in some cases and have lots of possible air leaks you can also have a small vac leak that can let dirt pass into the system and the oil.

#5

The comments were the iron went up. That is direct ware of the motor in a shorter oil change interval. Since the Iron went up. They are saying that is showing unexpected increase over average for ware. They think this is linked back to air getting past the filtration system.

#6

Ahh. Ok. I guess in that context that makes sense. I just didn’t understand the specific reference to a lower silicone number, not higher. Iron makes sense though. I do have the K&N setup so I’ll check those out.

As for the coolant, I have not had to add any since I bought it almost 2 years ago when I changed the reservoir. Next oil change, I’ll get the whole front end off and look at the oil cooler I suppose. Anything else to check while at it?

#7

You are misinterpreting the report.

The shaded column immediately to the right of the current results (labeled UNIT/LOCATION AVERAGES) are for just your car. Note how they are exactly the same as the column with the data from your previous oil analysis. As you have more oil reports done, your unit/location averages column will change. This column is useful for tracking changes in your elements.

The far right column is what you should be comparing against in terms of an absolute number. Your silicon of 14 ppm is double the universal average of 7.

Wasn’t there a properties section in the report where the fuel%, antifreeze%, solubles%, etc are listed?

#8

Ahh, and that now even makes more sense. Forgive me as these are the first 2 oil changes I’ve ever had analyzed. Still getting the hang of reading these things.

Here’s the bottom portion.

http://audirevolution.net/addons/albums/images/264045400.png

#9

What kind of oil are you running?

My Mo count was only 1ppm. I figure it is either an additive in your oil or a coating on the piston or ring package that has completely worn off on mine.

#10

Mobil 0w 40