Engine oil PENNZOIL or OEM Mazda

Mazda says every 7500 miles for normal duty OCI, and I’ve done every 7500 miles since brand new on my 2014 3z.

It’s now at 187k flawless miles, consumes no oil *at all* (I’ve literally never had to add oil beaten changes, ever, what goes in comes out every time), runs like new, seems easily headed to 250k.

For Pennzoil, I always use the Ultra platinum over the standard platinum. It has been tested to have lower friction and higher addictive content.

I have had a much better experience with Pennzoil in Japanese cars. Pennzoil is a bit better.

Don’t use royal purple heard so many bad things about how it’s not a good brand anymore, I swapped to penzoil oil plantinum 5/30 and honestly the car feels a lot smoother and sounds a lil less ticki but still I’d recommend anything other than royal purple

One poster said it right; Amsoil is a Multi Level Marketing program and that's why it's so expensive. Yes it's great oil, however, the Penzoil ULTRA Platinum is high in detergents that keep your engine clean. It's made of natural gas, an industry first, and is so pure and clear you can hardly see it on your dipstick.

I always run 5w30 Pennzoil Platinum in mine. I have run other brands, but I have settled on this. Easy to get, often on sale, excellent oil.

Pennzoil Ultra Platinum in my 2016 Focus ST. It seems to love it. Quieter idle, great gas mileage, drives smoother after a cold start.

Grab a good quality 0/w20 synthetic. I'm currently using Pennzoil and a Fram filter.

I run Pennzoil ultra platinum oil and GM syncromesh trans fluid

Pennzoil is fine, definitely not the best though (my 9th Gen si burned a lot using it) if you can get Mobil 1 or Castrol l I’d go for them instead and use an oem filter.