Congrats Mark on the fix! I wish the best for you and your baby.
Not for noting, but I had the opposite issue, when I switched to BP I started to get chain tensioner noise,

scary shiznet, switched to VR1 and never heard it again. Crazy I know, I really liked how BP kept my baby cool but the leaks were just unbearable.
If the noise rears it's ugly head with VR1, then I may have to consider Kendall GT1.
Question for the guru's, I did not know the original Kendall formula had 20% synthetic like today's Brad Penn?