Engine oil PENNZOIL or AMSOIL

Amsoil 5w-40 full saps

Switched to Pennzoil Platinum for my current car and the engine is noticeably quieter (doesn't have the same mild clattery-ness from the valvetrain like with Mobil 1), and it doesn't burn either

I run Pennzoil almost exclusively. Especially, in my Dodge/Jeep because it meets the OE specifications.

I used to only use Mobil-1, now I use Penzzoil. I go with whoever has the best rebate at the time. they are all fine.

Im using amsoil. Change oil interval every 5k. Pag gipit, 6k kms.

I've been using Amsoil for mine since bought new

Amsoil OE for gasoline engines. Amsoil Turbo Truck for diesels. They are reasonably priced naman for their specs. They have the latest API rating din.

Amsoil Signature Series

From my knowledge it doesn't matter what brand you put in. Just make sure its quality oil that's rated for your car and do oil changes regularly. I have used Mazda branded Moly 0W-20, Mobil1 Extended Performance 0W-20 and currently Pennzoil Platinum 0W-20. Honestly I can't tell the difference between them at all.

I used Valvoline synthetic in my first SHO, and I am using Mobile 1 in my latest SHO. I tried Pennzoil in my 5.0 (Windsor) and all the lifters started clattering.