So I was reading around on changing the oil on my whipples for the upcoming season. Whipple's website recommends two different weight oils. One being 140 and the other being 200. I was wondering what everyone runs? I was thinking about the 200 as its in a boat, where the environment is very hot all the time. 3.3L whipples, if size has any determination in your reasoning.

We only use Castrol Syntec 5W50 as per Whipple.
Eddie

Any one else have an opinion?

Here is whipples document

https://whipplesuperchargers.com/ima...aintenance.pdf

I run straight amsoil 60w syn.change it every season.the 3.3l are lyscolm's.