Engine oil Shell or RAVENOL

Using rotella t4 btw.

Shell rotella t5 its valvetrain runs much smoother and quieter with a thicker diesel oil.

I only use Rotella T6 in all 6 of the cars at my house.

Even Ravenol, which is pretty expensive since it is made in Germany from Group V base stock. Great stuff.

I've used Rotella T6 in literally all of my bikes since 2017 because it is cheap and has JASO MA2, it is deisel oil.

I've been running rotella t6 4w40 in my 81 cb750c for the past 15 years. I also use it in every other bike I own or have serviced and my 4 wheeled vehicles.

I use Rotella T6 5w40 in all my vehiciles. It's a quality oil that works well for everything I own from mechanical turbo diesel to motorcycles to big blocks.

I used to have castrol but since i chiptuned my octavia i switched to ravenol and the oil temps went down a good bit and it doesnt use any oil but that could also be because the old oil was 0w20 and the new one is 5w40

Last month I replaced the valve stem seals and it helped massively with the smoke. It doesn't really smoke much anymore, there's definitely still small puffs when taking off quickly, but nothing that I can see in the mirror.

something you might consider is switching to Shell Rotella T6 5w-40.

you can find many testimonies to the benefits of using T6.