Don't think so. It was motorcycle oil from autozone. Only ran it for a few months.
Just changed it to Rotella T4. Engine already seems quieter. But I'm really curious if an additive was put in the oil before I changed it a few months ago.
Obviously antifreeze from radiator. Just a little humor. I'll go play in the street now with heavy traffic. Honestly just sounds like oil, change it and see what happens, don't run synthetic if you would like your clutch to work properly, wet clutch.
You can always send a sample to Blackstone Laboratories for annalysis. I use them for both by Vettes (will also start with my 750 with first oil change). It makes it easy to spot small issues long before they become large issues.