Pennzoil high mileage synthetic. I've burnt/leaked far less fuel since I started using it.
I use Pennzoil Platinum after FordBossMe turned me onto it and did some (quite detailed) review videos covering it versus the other ones such as Mobil1 and Valvoline
Pretty much as soon as I switched to Pennzoil Platinum (the one made from natural gas) my engine ***suddenly*** got noticeably quieter. Previously with the Mobil1 it was making faint clicking/lifter noise during the first few minutes of driving
Starts are quieter too, with the Mobil1 it made some light clatter/metallic-y noises on those very first 1-3 seconds of startup, but now with the Pennzoil Platinum it purrs up smoothly from the moment I turn the key
I use Pennzoil Platinum Full Synthetic in my 21 Forester. $23 for 5qt from Walmart and $12 oil filter from dealership.
Project farm did a bunch of tests on all popular oil brands and amsoil won followed closely by pennzoil ultra platinum. The pennzoil is easier to get so that’s what I use on all my cars.
I like running pennzoil euro platinum 5w40.
Any major brand of the correct rating and viscosity will work.
That being said, I have an 05 that was used as a DD for 12 years. Short trips, 3 days a week. After 12 years and 47K miles, I added a aftermarket supercharger. Put another 20K on it, including trips to the drag strip and track days.
I then had it rebuilt with forged internals because I wanted higher boost and more power. When the engine was pulled apart and measured. There was no wear. The cylinders were still within factory specs as was the crank.
I had used Amsoil SS 0W-20 the whole time.
Amsoil in everything I ever owned. My 2017 RAV4 hybrid is sitting on 350k miles and still running strong.
I run amsoil in the engine and primary and redline in the tranny. No issues, my glide runs better on the amsoil then when I the syn3 in it
Here I am just dumping in Amsoil 5W-50 SSO because all I care about is shear wear protection and something content with high temp operation. 20,000 miles and not even a single psi drop in compression the whole time, don't even premix.
I've been running Pennzoil Ultra Platinum in mine for a while now, and it's done me well. Just hit 200k miles on the odometer last week, so no issues there. Run a good oil filter (I prefer Wix XP) and good oil and you're fine.
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