Engine oil Mobil or Shell

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.

If I could change the oil myself I would do it every 5k using the cheapest 507.00 spec oil I can find. But I can’t so I do it every 10k and use Mobil1 ESP.

As long as it states VW502 on the back, you should be fine.

I used to live in Chicago, and had cut over to Mobil1 0W40 based on feedback from a very respected resource who worked for Porsche. For context, his recommendation was grounded in enabling my engine to better handle the harsh Chicago winter temps.

To be frank, I'm not sure if it made a huge difference but then again I do not have a chemical or petroleum engineering degree.

I drove my VW to 200k miles without any issues.

You can also try changing your oil to M1 15w50 full synthetic that helped me with my cold start rattling issues and the engine seems to run smoother along with the vanos idle clacking noises going away.

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

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

Personally I use mobile 1 extended performance and change every 5k but I’m a bit of an oil critic

Tengo un Vento 2.0 TSI gen3 que cuando lo compré usaba Elaion F50 sintético 10w40 y lo consumía. Cambié a Mobil 1 FS 0w40 y no consume más...

I used to do Motorcraft 5w20 but I ended up switching to Mobil 1. It just performed better in the car and made the engine run smoother and quieter.

I am still on 5w30 Mobil 1...