Engine oil Mobil or Shell

Just get Mobil 1 0w-40 better then all of these

Mobil 1 fully synthetic, multi-grade oils only.

Mobil 1 15w-50

M1 fs 0w40 has been working well for me. But this oil does lose some of its viscosity after a couple track days.

I buy mobile1 high mileage 20k mile oil and change it every year (less than 5k miles per year on my G coupe)

Mobil1 0W-30 full synthetic. Just did my first 1000-mile oil change a couple hundred miles ago. Been using Mobil1 0W-40 on my 2011 WRX for 220k miles, tracked, autocrossed, and daily driver duty after 160k miles when I had a head gasket failure and I rebuilt the engine.

If it says 5W-30 then the Hella synthetic should be fine. Except you can do all the other checks yourself. If they will use your parts that is ideal, get a Mazda filter and something like Pennzoil Ultra Platinum, Castrol or Mobil1 synthetic if you can get that.

900 rs shell engine oil for my scooty. Amazing. Smooth roses amd better mileage.

MOBIL 1 every 5k miles. Not the worst or the best oill

Mechanic put in mobil1 FS 0w-40. Car went into limp mode exactly at end of trip. engine was running rough and would not go above 40mph. Engine light was on. MB dealership denied warranty for an exhaust issue, stating the Mobil 1 oil (mb229.5) did not meet their required specification (mb229.51).