I use Mobil1 0w40 for the last 3 years (changed twice a year) with flawless UOA reports. I upgraded this summer to M1 5w50 as I do get low pressure warnings at times during high heat and heavy traffic situations summertime. Winter going back to 0w40
In my VN, always Mobil 1 0w-30 AFE.
I vaguely remember a video or a study done on mobile? Syntec or something, a somewhat scientific study pulling samples every 1k miles and sending out to a lab. Bottom line was that the oil actually got better over miles and they abandoned the project at 15k miles.
I only use Motul in my car, but I only drive enough to really do 2-3 oil changes a year in 3000 mile intervals usually.
I used OEM Mazda Moly 0w20 oil for most of the last 8 years, until I started getting coolant showing up in my Blackstone used oil lab reports. Switched to Mobil1 5w30 high mileage this last time, 2,500 miles ago.
Did switched my D400 to Motul 7100 4T 10W-50 @ 8K kms but in a non Bajaj service center.
Difference that I notice:
Engine looks a bit refined and smoother at high speeds or cruising above 70.
I used Mobil 1 with my Mustang. I like it for my timing chain and valve line. It’s very good. Car runs quiet.
On my newer engines that are modified I use motul, older high performance flat tappet engine I use rotella or equivalent. On my daily commuter I use castrol.
I used Motul with ester. 15W-50 I think? It was for a 16’ Continental GT. Seemed to work fine.
I use to use Mobil 1 Full Syth. and it was a mistake the \"knocking.pinging\" noise will also reduce using the right grade oil. Learn from my past experiences.
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