Engine oil Shell or PENNZOIL

I'm running Pennzoil Ultra Euro L 5w30. It's a low saps oil that's vw 504/507 approved. However, because of the high sulphur in US fuels, you can't run this oil longer than 5k miles. A low saps/low volatility oil will greatly reduce intake valve deposits proven by lubrizol.

I use pennzoil euro spec, I only go through about a quart between 5k oil changes.

Speaking of Rotella, Here's a personal observation of mine. My beater Saturn 1.9 has a lifter tick (not fixing it, don't care), so I just put in Rotella T, and it quiets it up a bunch!

ROTELLA T6 - Instantly i noticed a very nice purr from the motor. Its a heavy oil and with stabilizer (in this case thinner than the oil) It warmed up slower, meaning that it was absorbing more heat. No extra start up noise at all. The biggest gain from the Rotella was hot weather stability. It seemed to perform the best when you drove the car hard! Hot weather didnt affect the engines power anymore, and that made me really happy. Turbo lag was increased slightly, and the engine revved slightly slower, but remained perfectly stable. I loved this oil for protection, its really good for hot weather!

I'm running T6 in my car as well It's been great the last few changes, best oil I've used for my 1.8T and I have over 190k on my engine.

Jumpers, disc golf bag, sleeping bag, old winter jacket w/ wool socks, OEM jack w/breaker bar, 4 qt Rotella T6.

I've been alternating between the OE Castrol (with the free maintenance) and Pennzoil Ultra Euro 5W-40 (502 compliant and recognized/certified by Audi/VW) in 5,000 mile intervals. I've had both tested, and the TBN is higher on the Pennzoil and the viscosity always perfect (Castrol tends to read thinner than 5w-40 on the samples I've sent in for analysis).

Shell Rotella T6 is a nice, solid oil. relatively inexpensive also.

Turbo ppl love it due to the shearing factor. Blows M1 out of the water for down here in Florida. Oil consumption went down in my 2.0T when using it.

Currently using it on the 16V. So far it has quieted down the top end valve chatter. Also it has stopped the Oil Evaporation issue I had.