Engine oil PENNZOIL or AMSOIL

Amsoil Signature 5w-20 + K&N Gold oil filter (HP1017 for 4th gens, not sure about 5th) is arguably the single best combo if you can afford the oil. Your lobes will thank you.

The first thing I did was change the oil using a wix filter and Amsoil signature series 5w30. The verdict is that the oil has plenty of life left and could have easily run longer.

Amsoil W20 I got a 5.7 it’s been great to me

Amsoil Signature Series 0w40 is an outstanding oil I run it with the SRT filter.

I usually buy Pennzoil, it's inexpensive and it works. I check the contents first to make sure the oil isn't full of gunk in case someone swapped it. I do oil change every 5k km, which is once every 2-3 months, hence I don't worry much about too much gunk as I flush it out often.

I am a big fan of amsoil. I purchased a used F150 in 2012 . It had 80,000 miles. The first thing I did was I changed the engine oil, tyranny fluid, and front and rear end lubs to Amsoil. It now has 242,000 miles and just keeps on running.

I use the Penzoil Platinum Euro LX Full Synthetic 0W-30. No issues past 2 oil changes.

The oil for our car is VW 504.00/ VW507.00 the 504 spec is 0W/30 and the 507 is 5W/30 only difference is fuel economy and the 5W/30 is the better choice i have used Penzoil Euro Lx for 0W/30 and oil does get by rings so might see puff of smoke on initial start, but with the 5W/30 Total nothing.

I have used Amsoil for years and I change my oil every 15,000 to 20,000 miles.

AMSOIL - DO NOT USE THIS CRAP , No seriously this stuff is crap and it's not worth the risk. I put this in my R32 at 24,000 and the motor blew at 24,500 due to a depleted rod bearing.