I’m slowly switching to Mobil1 since I started doing oil analysis.
It has no sodium and therefore a good way to see if there is a coolant leak.
Pros: good for coolant leak detection
Owner reviews for engine oil
4218
Manufacturers
Comparisons
Amsoil. My s2k burned just about every oil when I beat on it until I started using Amsoil.
Pros: stopped oil burning
Cons: other oils burned quickly
Vehicle:
Honda S2000
Pennzoil high mileage synthetic. I've burnt/leaked far less fuel since I started using it.
Pros: burnt/leaked far less fuel
Shell rotella t5 its valvetrain runs much smoother and quieter with a thicker diesel oil.
Pros: smoother and quieter valvetrain
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
Pros: engine got noticeably quieter
Cons: Mobil1 made clicking noise
Motul 8100 stopped all oil burning issues I had in my Subaru Turbo. Mobile 1 would just burn off and I had to constantly add oil
Pros: stopped oil burning issues
Cons: Mobile 1 burns off
Vehicle:
Subaru
Valvoline VR1 for the track car. Valvoline VR-1 is a very highly reviewed oil with a high zinc content to keep race engines running with very minimal wear.
Pros: minimal wear, high zinc
Castrol in my daily driver. The daily would have a slight ticking when warming up with other brands, not with Castrol, so I been using it for over 100k with no issues.
Pros: no ticking when warming
Cons: slight ticking with others
Mileage: 100000 km
I believe the final takeaway was that Valvoline Max protection was the best
Pros: best oil
Vehicle:
Subaru
I've used a number of different oils in my XS400 over the past couple years, can't say I've noticed much of a difference other than when I used a 15W40 the engine was a lot noisier, going back to 20W50 and the engine quieted down a lot.
Pros: engine quieted down
Cons: engine was noisier
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