Engine oil PENNZOIL or OEM Mazda

I go every 5k using Pennzoil Platinum 5w-30, though it's just a stock engine/tune and more than half are highway miles

The engine itself runs great with the 48K I put on it in the past 2.5 years with biannual oil changes (Pennzoil Ultra Platinum). Averaging 27 MPGs on 91 Octane hwy miles, 24-25 mpg in the city.

I drive a 2021 RAM 1500 Classic and use only Pennzoil Ultra Platinum with the extended guard filter cartridges. I change my filter cartridge at 5,000 miles and reset my light then at around 10,000 miles, I change the oil and cartridge. There was one time I forgot to change my oil before winter and didn't feel like doing it in the cold so I ended up around 15,000 miles before changing it. The oil was still fairly clean.

Synthetic oil change is now $125 at the stealership so Ibu my own 0/50 Penzoil and a high quality filter every year, and vacuum out the Hybrid Traction battery filter myself

0-20 pennsoil synthetic with a wix or napa filter

Unless you are tracking the car you aren\u2019t going to see a difference. I use Pennzoil ultra platinum and a wix filter on my daily\u2019s.

Pennzoil Ultra Platinum, better than mobil 1, but also I am pretty sure all oil is within a few percentage points of performance anymore anyways, and it really doesn't matter as long as you change it when you should.

I personally am changing my own oil with full synthetic on my 23 2.5T every 6000 km or so. No need other than peace of mind for me. Doing it myself only takes 30 minutes and $35 in oil, filter and crush washer.

Many reputable rotary shops have tested numerous oils over the years, and agreed that the bearings do not have adequate protection with 5w-20 or 5w-30, especially if you track the car or do any spirited driving regularly.

Pennzoil UP was on a sale and I bought 15 quarts, my Sierra dropped a lifter within 200 miles of the OC and switch, related, no way, will I ever use Pennzoil UP again, no way.