Hughes retro roller lifters and 10w30

I have posted this before...but maybe should again.

I want to qualify this as I haven't tested this stuff since 2008.

Every single time I tested HRT with a 30 verses a 50, the 50 always, every time made more power. Some of that came from the fact you could turn 300-400 more RPM but most of it came from the heavier grade oils ability to resist pumping up, and more importantly, we found that lower grade oils also tend to make the lifters lose lift at lower pressure.

Run the 20w50 and you'll be fine.