The Cosworth

So i am a little concerned. I did my first change at 2500km and the report was great. I went with 50% oil life and 7500km. Just got the report back this time and am less than happy and actually quite nervous. Now my initial report a 2500 showed that the truck was not wearing at all, which was slightly strange, but now things are through the roof!

Not sure if it is just breaking in late or if there is something really going wrong here.

zx12-iowa

What oil brand and weight did you use for each oil change? You sure it was a good sample?

The Cosworth

Whoops swore I put that in.

First sample was 2500km after purchase. This one was at 10,000km. (6000 miles give or take). Changed it with Pennzoil Ultra 5W-30 and that is the sample analysed here. Changed it with Pennzoil Platinum 5W-30. That will be the next sample.

The more I look at it the more I think it isnt as bad as I initially thought. The flashpoint is lower than before but the rest of the oil reads quite similar to the original. It is just the copper I guess, which could be anything, including something they maybe add in winter fuel. The % is a lot higher obviously but at is also because I have 3x the km on this change. Also I guess in the cold DI engines like to inject more fuel into the oil. I am mostly worried about the copper now (like they mention) but even then it isnt that much higher than normal.

packplantpath

I'd keep an eye on fuel dilution, but I suspect your first change was too short to get all the wear metals out. It was what ,1.5 tanks of gas?

ID bet dollars to donuts the next one looks fine as long as your hpfp isn't leaking excessively causing wear.

gDMJoe

The "wear metals" should/would normally be "out" within the 1st 800km (500miles). So after the 1st change at 2,550km (~1,500 miles), the #s should be less. EXCEPT for fact of the fuel infiltration. NOT GOOD.

Would strongly take Blackstone's recommendation to cut-back on the miles-on-oil.
.

modru2004

his fuel dilution is rather high. have you had the TSB done regarding fuel in oil OP?

snobdds

The fuel dilution is just fine for a DI engine. It's only 3/10's of a % over anyways.

Only go 5,000 miles on the next OCI and test again...

The Cosworth

Thanks guys, it seems the dilemma I am having in my head is the same as what you guys are. I know they are slightly high but there could be very good reasons for it (continued break in, extremely cold winter for a long time) but at the same time and nervous.

Ill do the next one at 5,000km (3000 miles) and see what happens. The oil change isnt expensive in the scheme of things.

Modru2004, no I haven't. I was reading the thread about all the work and I cannot see how the TSB will help. I dont seem to have any issues with increasing oil so far but I am trying to keep an eye on it.

itguy08

I'd bet coming off the cold weather is why the dilution is high. Definitely keep an eye on it as it seems like the 2013's for whatever reason seem to have leaky HPFP's. But if it goes away this sumer I wouldn't worry much about it.

I'd give another cycle to see if the wear metals stabilize. Could still be breaking in at such low mileage.

Cord

I'll be it's fuel dilution that is also leading to the premature timing chain wear. Bearings will be the next to go. Saving the environment one failed component at a time....