Engine oil Castrol or Shell

Using Castrol EDGE Euro 5W-40 after watching a EN owner on YouTube suggested it. Car runs great in this 110 plus days in Texas

I did 100k on Castrol gtx in an f4i plus tens of thousands on other bikes using the same oil. I buy it in bulk and it goes in the whole fleet.

I've used Rotella T6 in literally all of my bikes since 2017 because it is cheap and has JASO MA2, it is deisel oil.

In the rare occasions I get it from there, I use Castrol or Mobil One 5W-30 or 40.

Walmart carries jugs of Castrol Edge SPT 0w40 A3/B4 for much less than quarts at AutoZone

Run it in my R, wife's GTI, and even ran it in a WRX I used to have. It's good oil, the analyses I've sent in over the years don't lie!

Castrol Edge 5W-30 for me. I live in Vegas where it barely gets under 30 degrees in winter even so it's a better oil for the hot climate in live in

Fa20 DIT..Castrol edge Euro..0w 40 winter, 5w40 the rest..111k miles, stock block, E85, 400ish whp, drive like I stole it..I change it every 3k, 4k a few times in a pinch...I also run an IAG street AOS

I've been running rotella t6 4w40 in my 81 cb750c for the past 15 years. I also use it in every other bike I own or have serviced and my 4 wheeled vehicles.

I use Rotella T6 5w40 in all my vehiciles. It's a quality oil that works well for everything I own from mechanical turbo diesel to motorcycles to big blocks.

have used Castrol 5w-40 as VW calls for and change at 5000 mile intervals. Now at 129K, it still uses one or two quarts between changes and performs as well or better than new.