66 Sat
Well-Known Member
Just wondering what everyone is using for engine oil? Mineral, Semi-Synthetic or Full Synthetic?
After the first rebuild of my poly I was told by a number of knowledgeable people here in Australia to run Penrite HPR 30: https://penriteoil.com.au/products/hpr-30-20w-60-mineral
The engine builder who recently did my poly stroker build recomended a thicker oil again:
HPR 40 25W-70 (Mineral) | Penrite Oil
Then I came across this article in the "similar threads" below:
What I Learned Today — Bearing Clearances vs. Oil Viscosities
I have no issue with using either oil or something different, but was just wondering the thought process behind what folk here use. My engine has a solid lifter camshaft with presumably reasonably tight bearing clearances being a fresh build, and is run on the street and occasionally the track in a climate similar to Miami Florida.
I will ask the engine builder next time I'm passing his shop as I'm curious why he told me to use such a heavy oil. Both recommendations were for a Mineral oil as well, not anything synthetic.
After the first rebuild of my poly I was told by a number of knowledgeable people here in Australia to run Penrite HPR 30: https://penriteoil.com.au/products/hpr-30-20w-60-mineral
The engine builder who recently did my poly stroker build recomended a thicker oil again:
HPR 40 25W-70 (Mineral) | Penrite Oil
Then I came across this article in the "similar threads" below:
What I Learned Today — Bearing Clearances vs. Oil Viscosities
I have no issue with using either oil or something different, but was just wondering the thought process behind what folk here use. My engine has a solid lifter camshaft with presumably reasonably tight bearing clearances being a fresh build, and is run on the street and occasionally the track in a climate similar to Miami Florida.
I will ask the engine builder next time I'm passing his shop as I'm curious why he told me to use such a heavy oil. Both recommendations were for a Mineral oil as well, not anything synthetic.