Engine oil Mobil or IDEMITSU

if you buy oil from Walmart, 5qt of mobil 1 or similar is well under $30. i buy the Mazda OEM filter/washer combos in a pack of 5 for like $6 per filter. so my oil change is around $34 (plus $10 for a bottle of techron) and i know i didn’t fuck it up.

for my 2025 camry, I get a 5 qt bottle of mobile 1 0w8 for $28 at walmart and a oem filter for about 5 bucks from the dealer with the washer, so a change for $33 bucks total.

I've been using Mobil 1 European blend 0w - 40 full synthetic. It's done me good for well over a year now.

I get my oil from Sams for about $60 for 4 gallons. I use the Mobile Delvac and haven’t had any issues.

Mobil 1 high mileage 5w30

But personally i like Mobil 1 brand

I went with Mobil 1 5w-30 ESP. I read around the Bob is the Oil guy and that is what I came up with what I would best for WRX that will be tuned with an intake (My opinion). I am sure there are other good options.

Other vehicles, I ruin normal Mobil 1 until about 80-100K miles and switch to high mileage. Put over 200K on a '04 Civic Si on all Mobil 1 and oil analysis came back great every time.

My changes have generally been religious at 5k and that didn’t save my GTI from losing compression in cyl3 at 37k untuned miles it suffered 15% leakdown vs the other 3. That car got M1 0w-40, tried and true stuff, so you just never know.

I used to use M1 0-40 in my VR6 Corrado, but the valve, chains and engine noise went way up, especially at a cold start