Overkill, with all due respect, if you have only used Mobil-1 for decades, then how can you suggest no other oils run quieter?
Hold on for a second, where did I ever say I ONLY used Mobil 1 for decades? I said I've used Mobil 1 for decades, but never stated, nor implied, it was exclusively. Obviously, I wouldn't be able to make a comparison if that was the only oil.
In boats:
- 312 Ford Interceptor, highly modified, ~425HP, ran Castrol, Valvoline and Mobil 1 in it. No difference in noise between the 3x. Mobil 1 was arguably smoother, but that's anecdotal.
- 351W GT-40 in our current Supra. No idea what was in it, bulk from the Marina. Now has Delvac 1 ESP 5w-40 in it, no difference.
- Iron Duke in a 1976 Glastron. Marina bulk to Delvac 1 ESP 5w-40, no difference.
- Honda 9.9 4-stroke. Marina bulk to AMSOIL ASL 0w-30 to Mobil 1 0w-40, no difference between the three.
In ATV's:
- Yamaha 225DX trike. Ran Yamalube 20w-40, switched to M1 TDT/D1 (which were the same at the time) 5w-40. No difference
- Suzuki 250 sport quad. Swapped out whatever ATV-specific lube was in there for TDT/D1 5w-40. No difference
In OPE:
- Troy-bilt with a Honda GVC engine. Swapped out OEM 10w-30 for M1 0w-40. No difference
- Craftsman lawn tractor w/B&S V-twin. Swapped out SAE30 for M1 10w-30. No difference
- Yamaha 7,000W generator. Swapped out SAE30 for M1 10w-30. No difference
- Makita 4,500W generator. Swapped out SAE30 for M1 0w-40. No difference
In vehicles:
- 1989 Lincoln Town Car. Swapped out dealer bulk 5w-30 for Mobil 1 5w-30. No difference. Years later, I switched it to M1 0w-40 which became my favourite for Windsor engines.
- 1987 Mustang GT. Swapped out whatever the PO ran in it for various grades of Mobil 1. It didn't seem picky. Valve cover gaskets immediately started leaking and had to be replaced. Eventually settled on M1 0w-40.
- 1988 F-250 w/300 i6. Swapped out Castrol 10w-30 for M1 5w-30. No difference
- 2001 BMW M5. Swapped out BMW 5w-30 for M1 0w-40. If anything, it was quieter.
- 2002 Ford Expedition. Ran everything under the sun in it. It had Pennzoil, Castrol, AMSOIL, Petro-Canada, Petro-Canada Duron, Redline, Delvac 1, Motul and Mobil 1. Mobil 1 didn't consume, it drank the AMSOIL and Redline (5w-30) made it a bit sluggish. Eventually settled on M1 AFE 0w-30 for it.
- 2005 Subaru Forester XT. Went from dealer bulk 5w-30 to Mobil 1 0w-40. No difference, if anything, it was quieter.
- 2006 Dodge Charger R/T. Went from dealer bulk (Pennzoil) 5w-20 to Castrol Edge gold bottle 0w-20 to Mobil 1 AFE 0w-20. No difference.
- 2014 Dodge Charger SRT. Went from Pennzoil SRT 0w-40 to Mobil 1 0w-40. No difference.
- 2016 Dodge Durango Limited. Went from dealer bulk 5w-20 to Castrol Edge gold bottle 0w-20 to Mobil 1 AFE 0w-20. No difference.
- 2016 Jeep Grand Cherokee SRT. Went from Pennzoil SRT 0w-40 to Castrol Edge Euro 0w-40 to Ravenol SSL 0w-40. No difference.
- 2018 Dodge RAM 1500 Ecodiesel. Went from Shell 5w-40 to Delvac 1 5w-40. No difference
- 2019 RAM 1500 Sport. Went from dealer bulk (Pennzoil) 5w-20 to Mobil 1 EP 0w-20. No difference
I currently have in stock here:
- Castrol Edge (gold bottle) 0w-20
- Mobil 1 FS 0w-40
- Delvac 1 ESP 5w-40
- Ravenol SSL 0w-40
- Motul 0w-30
- AMSOIL ASL 0w-30