Engine oil Shell or MOTUL

So I took his advice and did the Rotella T-4 and MMO in my 71 LeSabre 350. Added a little to the gas, too. I run 93 octane gas. Engine is stock and original, about 90k miles. It's running so smooth now. It was an immediate, noticeable difference.

Using rotella t4 btw.

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

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

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

I changed my engine oil at 5k km on my own because the bike felt shit to drive, heating up too much + shitty mileage, my guess is that RE uses an improper grade or bad quality oil, i used the motul 10w50 fully synthetic oil, it's an immediate and huge improvement, mileage, heating, smoothness, clutch, everything improved, and I'm not even exaggerating.

Would be better to use a quality full synthetic instead. Motul 7100 is very popular but there are other options. I'm thinking about giving the Shell/Ducati oil a try.

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.