Engine oil Shell or OEM Mazda

Shell Advance Ultra - yung full synthetic. Mahal pero worth it. I change oil every 2.5k - 3k max.

I have been using Shell Rotella T5 for decades in big v twins. Currently 1900cc Statoliner.

Im with all these 5w40 rotella guys, just started running it in my 91 1500 with 145k miles with the 4.3tbi and she loves it, I notice a slight bump in oil pressure for sure.

I have a 2001 Forester L and I enjoy using Castrol Edge 5-30 during winter and Rotella T6 5-40 during the summer in Arizona.

I’m on rotella t6 on my ‘05 Impreza at 217k miles. Just had all the seals replaced. It has been on rotella since 132k miles. Runs really good.

I live in a dusty climate I change my oil at least annually and I use Mobil one in my Volvo, Kirkland synthetic in the kids cars, and rotella in my air cooled vw.

I use Rotella T6 5W40 on my stock motor STI.

now im using shell long ride currently at 1500km and i havent feel any vibration yet and its cheaper than amsoil.

Rotella T6 15W-40 in the perfectly sized 2.5 gallon jug. I’ve run this in both LML’s since day 1 and combined it’s over 500,000 miles.

For the record, this is NOT the exact replacement to Mazda 0W-20 GF-5 with Moly - Synthetic Engine Oil.

While this has high molybdenum, it's still a different formula from Mazda's own proprietary blend.