My Truck is doomed! Oil test results from 30k oil change. UPDATE: 110K!

I always find your comments helpful, keep up the good work!
Cheers

 

See, if you are going to change your oil too often, this is how/why you do it.

 

Mobil 1 has been crap for several years now. Especially in the shear/viscosity stability. I switched to Pennzoil platinum in my '04 WRX and had much better results. I believe they had a change of formulation back in the day. I forget the details, but I thought the dropped back from being a true group 4 as well. This after raising a stink with other oil companies for calling their < goup 4 oils "synthetic". Anyway...Ill use PP or most probably Castrol Syntec or any other synthetic before I touch M1 again.

 

yea mobil 1 isnt a group 4, its highly refined group 3 base stocks.

Ive never understood the fetish people have with Mobil 1.

 

This OP is cool. The only interval which I can see for which is not accounted for here is the oil itself becoming carbonized and eventually becoming carbon deposits within the heads/ piston tops due to less frequent oil change intervals.

 

Direct Injection is also notoriously known for carbon deposits. Audi's come to mind for some reason.

 

Calcium? It's a salt, and water soluble, but typical anyway evidently.

 

I like to use Blackstone on my vehicles too, always like to read the comment section too where the write stuff.

 

Technically - calcium is a metal. I don't remember materials that well from college, but when I went down the rabbit hole on my own Blackstone results, I found that it's used as a detergent for engine oils. 2000 ppm is typical and means the oil can continue to do the job of reducing deposits.

OA

 

Yeah I changed to PP some time ago after seeing better data.

 

Thanks for sharing, these engines are exceptionally clean burning.

 

Excellent post and comments man! It's good to see fact instead of opinion every now and then.

 

I put in Mobil 1 this go around..... I guess I'll be looking to do this again for sure.... probably update this post with the info.

 

If I ever overhaul the engine, I'll definitely look for this.

 

Probably because it's used in stock sports cars like the Vette.

 

Makes sense, yes.

 

Because it's a consistent, quality, proven product that is available at every corner auto parts, convenience or mega store across the US at a great price. It's hardly the crap oil that some on the internet make it out to be. Change it and your filter every 7-10K miles like you should be and everything will be fine.

 

I never said it was bad oil, I just dont get peoples infatuation with it.

 

Mostly marketing. I think they use the same marketing firm that Ford uses.

 

Updated op with 40k info.