Maxum 4 20w50 motor oil ?

If it's MC oil or Not Energy Conserving oil, use it!

Im going to try a 20W50 in mine for the summer.

It's the motorcycle specific. Changed the oil and bike seems slightly quieter and a little smoother shifting.

In colder temps 20/50 can cause issues with the starter(in my 1100). Even here in Vegas I had to switch back to 10w40 because the starter had some trouble engaging at start up. After the 10w40 was back in no trouble starting.

~O~

If it "Maxima" with an "a" on the end it is fine. Good stuff. I use their coolant. I have never used anything but 20w50 in a motorcycle before, but this is AZ. It's 118 degrees here right now. I highly recommend heavier oils in older engines with some wear. They have a lot more load bearing ability than the thinner stuff, and help fill in the worn clearances better. It acts as a "cushion" between moving parts, which is why the engine runs quieter.

here in south east ga . i use castrol gtx 20/50 year round.

You can use the oil with confidence.

I have used 20-50 synthetic for motorcycles for the last 2 years .. No problem .. Would not use it in winter riding were I live ..but summer time .. All is right