Engine oil suggestions

I have been using 5W20Wt Valvoline non synthetic in all my Hi Po Mopar motors for a long time, the roller lifter motors get no additives, the flat lifter cam motors get a bottle of either zinc additive or Comp Cams lcam lube There have been horror storys posted on this site about deisel oil foaming, I have no expereince with that so I won't comment on it You need to think about what oil does for our motors, it needs to lubricate and cool That being said thinner oil moves quicker and with less resistance to the oil pump when cold, it also take less HP to turn the oil pump I've seen 10 HP loss at 130 F with straight 30 Wt oil years ago compared to the same oil and motor when we let the oil temps climb to 160 F No loss or gain of HP or torque when using 5W20Wt from 80F to 230 F I do run very loose oil clearances on the rod and main bearings also, .003 + on both I've shifted my 650 HP + pump gas street motor at or above 7000 RPM for a long time when running it at the track, a lot of laps over the years with no noticeable bearing wear or abuse OP, run what you feel comfortable with BTW, I do run both Rotella and Delo 400 in my CTD truck, depending on where and when I have the oil and filter changed and what they have in stock If you want to run race oil in your motor the only one I would run now is the RACING Pennzoil 25W50WT It has some lube additives, friction reduction, that no other oil has that I know of You can feel it when rubbing it between your fingers All the SCCA raers I know use it now

Is the Pennzoil 25W50WT available off the shelf or do you need to order it from a part store? What's the cost per Quart? Many people talk about Zinc content and I see normal commercial oils recommended, do they have a high enough Zinc content? Several people run diesel oil and have great luck, some worry the oil foams so that makes me stay away from diesel oil in my engine. I change my oil once per year due to working in Kuwait so my drive miles are very small per year. Thanks for your comments.

Do you order the oil direct from Brad Penn? Or order it from a parts store? What's the cost per quart? I've heard of BP products and the happy customers but have never used them.

I use either 15w40 Mobil Delvac diesel oil or Shell Rotella 15w40 diesel.Never any problems.

I order the BP from a local oil distributor. It costs about 58$ per case.

I like Brad Penn oil for flat tappet cam
I run pretty heavy springs and an aggressive ramp cam and have zero issues
Gus

Oops wrong picture

Delo 400 LE, 15/40 for me.