Engine oil Castrol or Kendall

On my ( 2006 Mazda 3s 2.3l auto sedan 350k miles ) I don't burn a single drop of oil and the car runs great even the transmission and I've been sticking to 5W20 Castrol edge extended performance all year

My car is at \~7600 miles. I changed the oil at 500, 5000 and then I'll change it again at 10,000. I used Castrol Edge 5w30 for the first two and I'll use it for the third oil change as well. I'm going to send a sample of the oil at the 10k change to Blackstone Labs to see how the Castrol is doing.

I would recommend the Castro Edge PROFESSIONAL 0w-20. Been using it in my wife’s LR4 since we got it and it was the consensus on best oil when I first did my research. It’s a little pricey but we’ve had zero engine issues with this.

we run castrol edge in our ‘04 FXT.

My rotary expert in north Texas recommended that I use 10-30 conventional oil. I personally prefer Castrol GTX

I use Castrol Synthetic 10w-30 on mine.

It’s thicker oil, so I feel like it gives the engine better protection. With 272k miles on it, I figured why not.

I’ve been running Castrol GTX 10w30 conventional in my 9000 Aero. Brought it to a Saab specialist and he recommended it. Need to have the valve seals redone and the oil is thick enough that it doesn’t get past the seals and no smoke. No issues running it. I change it every 3 months regardless of how far I’ve driven.

Good results with Castrol Edge Euro full synthetic. No issues. 138,000 miles, no oil consumption or smoke.

I tried using valvoline, that burned noticeably faster. But castrol high mileage has been pretty good.

Yes, Castrol is crapola, so is Kendall. Valvoline is the best.