Engine oil Mobil or OEM Mazda

I personally lean towards affordability, so I run Mobil 1 0w-40 because the local parts stores run sales for $35-40 pretty regularly.

I had a tiny bit blue smoke and thought it was sticky rings.

Ran mobil1 5/30 and it's gone.

Personally I've mostly been using Mobil 1 15w50, as it's almost never run in the winter.

Mobile one full synthetic hands-down. I have a 2004 Toyota Corolla and a 2007 Toyota Tacoma I’ve owned both since brand new and now both have over 260,000 miles apiece . I have only used Mobil one full synthetic changed every 5000 miles. just took a bore scope to look into both engines a few months ago. They look like they’re brand new. Almost no varnish. Absolutely no sledge, never had any problems whatsoever with these vehicles. It’s insane.

my vehicles use only Mobil 1 oil.

I have used Motul and Castrol before and I found the Mobil oil to perform and keep the engine cooler and smoother on my triumph.

Mobil 5w-40 or Liquimoly. 10w-60 for hot summer track days.

Mobil 1 AFE 0W-30 is what they used at the dealership and I’ve read a bunch of other people use it. I use it. Supposedly better than the mopar one.

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.

I tried Mobil 1 in a Vortec 5.7. That engine did not use oil using Castrol or even Walmart dino oil. IT did use a quart at 1000 miles using 15-40 maybe it was 15-50 Mobil 1.