Mobil HM Blend or Syntec Blend?

[ncirish]

Which of these oils is better and why?

I want to use a 10w-40 in a 2000 Trooper that uses about a qt per 3k miles. The Mobil Blend seems great with the PAO blended in but the Syntec lists a number of certifications and what-not that it meets (Mobil lists none on the bottle). I am going to use one of these at 3-4k intervals (lots of short trips), just wanna get the "best" one.

 

[pinoy99]

I've used the Syntec Blend before on my '99 with good results (less consumption than any of the other oil brand/weight that I've used).

I am currently on M1 15W50 fill but using Exxon Superflow HM 10w40 as top off. The Exxon seems to perform similar to Castrol.