I have tried several.. The synthetics are appealing and I have used them for years.. They did well, but I am pushing a 200K plus 1.6 hard and have decided to go back to an old favorite.. Castrol 20w50 racing.. The enging is quieter an I have total confidence in it.. It may not be technically better, but My engine seems tp like the additional viscosity... An additional benefit is it is a bit cheaper... not much..

 

Anyone else have Blackstone results?
I did/do run conventional 10-30w Valvoline in my Mazdaspeed6 (Turbocharged DISI), here's a couple Blackstone analysis results from that, first at 3k miles, 2nd at 5k.
I've heard good things about the Shell Rotella, and it's supposed to be fairly affordable. I might give that a run in the Miater.

 

Rotella T6 in special cars.

Rotella conventional in regular cars.

Whatever's on sale in the beater truck.

 

Search for my created threads, I'm too busy to look for you.

 

I have not bothered with Blackstone reports, although I am interested in starting with my new to me engine I swapped in. For what it's worth the Shell Rotella synthetic from Walmart has treated me well and I run in in all my vehicles and motorcycles.