I found this Castrol Act-evo X-TRA 4T 20W-50 on ebay, has anybody here used this before? Any comments good or bad? I will be changing the oil in my Heritage soon.

 

did you use the oil? what happened

 

I can't speak for the part synthetic you are asking about, but right before my trip to the mountains this summer I tried the Castrol full syn 20w-50. Holy Crap was my bike noisy!!! Every morning I would start the bike and I was waiting for something to blow out the bottom end it was so noisy. Going down the road noticeably louder rocker noise. 1800 miles and it got drained and refilled with Mobil 1 as soon as I got home.. Just my experience......

 

Talk about thread necrophilia, ...... and an oil one at that.