Mobil 1 ESP 5W30 and Delvac 5W40 are right next to each other at Walmart and usually within a dollar of each other in price. Our 2 cars use Mobil 1 ESP and my diesel Jeep uses Delvac 5W40. Both are good oils, so I think it will just be your personal preference. Blackstone tests will tell you the story on your oil and intervals better than Reddit.
Mobil 1 Turbo Diesel Truck 5W-40 in an ALH since new. 10K OCI, engine with 280K running like new.
Mobil 1 ESP 5W40
I run Motul 10/30 in my motor, helps the piston slap on cold start from the forged pistons.
Mobil1 is great oil and what I personally use.
One of my cars has 240,000 miles and burns 1/2 a quart in 10,000 miles using Mobile 1 5W-20
I'm using motul 5w40 8100 x clean and it's great on my m54b22. I'm loosing little to no oil between changes
Looks fine to me, oil is relatively cheap, forget all the mileage crap and change it sooner if you are uncomfortable with the way it looks. I change my oil every 2000 miles, or whenever I go on or do heavy riding. I also switched over to Motul 7100 simply because it’s red and I can see exactly when it starts to discolor. A motorcycle mechanic told me the number one reason for engine failure is dirty oil so I started changing it frequently.
I just use Kawasaki mineral oil or the Honda/Yamaha similar. Never had issues. Tried motul, liked the smell, same performance, more expensive, no point for me.
This sub loves to praise motul, but it caused me to foul up my spark plugs and have misfires. I tried both the 5W30 like the manual calls for and 5W40, but shortly after I changed to motul my plugs fouled up. I replaced them, they fouled up and misfired again. I tried it a third time cleaning the MAF sensor, checking if the plugs were torqued okay, checking the seal on the coil packs, etc... still fouled up. I finally guessed it was the motul and did an oil change away from motul and swapped the plugs again. 14k later no fouling.
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