Man, early morning oil change :)

Too frickin cold here in Boston. It's -6 with wind chill and I dont have a garage :( I really dont want to go to the dealer or valvoline. Maybe I can get my brother to do it since he is jobless :)

got my 2nd uoa in with diesel 15w/40, changed at 2K
my wear metals are better (new engine )
It all looks better (and I will post it tonight from home) EXCEPT
I now have a 2.5% fuel percentage and thats not good. It affected my viscosity and flash points. Now for those of you who are not aware, I am supercharged with larger injectors and a water meth injection system that I turn on only in boost (not often).
I am presently scratching my head--may have to go to a 20w/50 all the time. I do keep my oil temps up now with the coolers blocked.
Maybe i need a better oil pan vacuum system?
OD

Yeah my fuel percentage was up as well last time and it's bugging the crap out of me.

I didn't send my old oil in - but my first oil change was done yesterday.

We took a small sample due to me having a brand new engine and we ran it under a 10x scope and an electromagnet.... there was no discernible metal in the oil; thank you ceramic seals!!!!!

good news Kane!--hows the vis holding? Throw some on the hot exhaust manifold/header?

Yep 9K maybe we need a road trip! Drive the crap out of it:)
OD

Shhhhhh but I use old oil to help me check for exhaust leaks.... LOL redneck I know.

The vis looked fine; but it has been cold here and I haven't driven the piss out of it - no fuel smell really either.

Then again I was using like $100 bucks worth of high end motor oil as break in oil... hahaha

Hell yeah! We have the statewide meet coming up soon so 300 miles of curves and switchbacks should do it :) I also plan to do a impromptu run of the route prior to that.

OD, you mind if I edit and repost without your personal info? Viscosity looks low man.

OD, is this sample from the same oil as when you dropped the pan? If, so, why do you think there is no water in it?

OD's UOA.

http://c4.ac-images.myspacecdn.com/i...c72ea5ba37.jpg

yes ganseg it was and i dont know. maybe it wasnt water but fuel instead?
thanks for doing that 9K --its a wonder i got a picture posted at all!
viscosity is low for that oil but still more than enough to protect the engine.
OD

Cool, now edit your previous post and remove the attachment :)

We have to get to the bottom of this fuel dilution issue. Could it be your injectors?

i dont see how as my ltft's are ok and my a/f's are ok.
but something is happening.
od

First oil change results
 

Here is my first report (is there a better way to include the image?).

It's better than I would have imagined, considering the interval, first oil change, etc. The make-up oil was probably closer to 2 quarts, as I bought it as a factory rep car with 1000 miles on it and the dealer had topped it off before I took it.

how the heck did you have a cst of over 8 with a 5w/20 oil?
I am beginning to believe the devil invented uoa's
Your's sure looks good

Just for the hell of it --i will changing out my diesel oil for a track oil for a w/e at Road Atlanta march 12/14.
I will do a uoa post weekend on that change. I will be going with a 20w/50 oil for track--probably castrol gtx.Maybe Redline 15w/50 --dont know yet.

Here you go Pete. It looks really good for 5,500 miles (a lot better than the GC 0W-30 i had at 1500 miles). I was just talking to grungepup this morning about doing a UOA of his 5W-20 since his car is dealer serviced every 3k. Thanks for posting a UOA of 5W-20.

https://www.rx8club.com/attachment.p...5&d=1267101744

"1.3L Turbo"? :squint:

This is why sometimes I wonder about Blackstone... (And I'm a longtime customer.)

Here's mine with RotellaT 10W30 - none added during the 2000 mile oci. It was very clean before this oil went in since I have changed it 4 times in 7,000 miles. (I just bought the car in Oct, and have no proof of oil changes beyond the factory recommended.

Does this phorphorus and zinc look good (from the perspective of people who don't like the newer ILSAC std)? 797 and 954

1.8% gas; 330 flashpoint

Who can help me post this .rtf? I click the manage attachement button and it just says error on page.

Yes, I wondered that myself. Makes me wonder if the factory is putting in 5W30 or ?

As for the rest, I expected worse since I don't know how the car was handled for the 1000 miles before I bought it. I imagined a lot of cold starts to move it around, etc., but I guess it wasn't too bad. I have 5w30 GTX in it for winter, and probably will go to 10W40 for summer. Future UOAs should be interesting...

hey ganseng--so you have fuel dilution issues too? Flashpoint affected?
phos and zinc sound about right.

I don't see anything out of the ordinary. A viscosity of 8 cSt is about average for a 20W oil at 212*F. It may be a little higher or lower. He's at 8.3 which is right where it should be. Here's a chart showing expected ranges for various oil weights.

http://www.bobistheoilguy.com/visc.html

thats just it---people are having trouble keeping the vis's up in the appropiate range. This is the 1st one I have seen with a 20W that has answered the muster call.
Could the lack of any fuel be a big factor? Several uoa's are showing over 1%-2%?

My highly regarded GC 0W-30 was down to the 9.0 range after only 1500 miles.

What is your oil temp running at this time of year? Wondering if is a bit cool in the winter...leading to dilution problems in daily driving??

I had to block off the oil coolers to keep mine warm enough....