OIl zinc content

@Alan Merklin- how old is that list? Do you have a link to the article? Anything that is SN rated will be under about .08 and most current diesel formulations have big detergent ad packs as well as reduced ZDDP numbers as well.

Valvoline 4stroke motorcycle oil is absent too. Available anywhere(Autozone, Pep Boys, Advanced Auto, and Wally mart) in 10w40 or 20w50. Plenty of ZDDP, designed for flat-tappet engines like ours and Harleys.

Not sure how old that list is I found it searching web info that someone had cut and pasted , no link

I use Amsoil zrod 10w30 and it is stated to have a high amount of zinc and phosphorus. I also use Valvoline Racing which has it too. Looking around I can't find the percentage on either one though. I started using the zrod oil based on the amount of feedback for oil use in flat tappet engines.

I know some of you just use good ol' regular motor oil and manage 100 thousand miles on your engine. I commend you for your courage!

Just found this on Amsoil. Not sure how to translate it into a percentage...

https://www.amsoil.com/techser...%20Flat%20Tappet.pdf

Here's the specs on Valvoline VR1

https://www.valvoline.com/about-us/faq/racing-oil-faq

Wasn't Brad Penn rebranded a few months ago after an acquisition? 

I believe that it's called "PennGrade" now.

Rusty S posted:

Just found this on Amsoil. Not sure how to translate it into a percentage...

 I know some of you just use good ol' regular motor oil and manage 100 thousand miles on your engine. I commend you for your courage!

1300 parts per million is .13%                                                                                                      1300                                                                                                                                                1000000 =.13%

The whole automotive industry claims than the latest SN classification is "backward compatible" and some guys (eg- our own El Guapo) do get away with putting in whatever name brand is on sale, and doesn't seem to have any adverse effects. That only works with stock (and maybe some softer single high performance) valve springs, though- other than the occasional 1/2 or even full quart for top up in a pinch (even oil slightly low in ZDDP is better than not enough oil), I certainly wouldn't use an SN oil regularly in an engine with dual springs or if it revved much more than about 5,000 rpm with power. Al

Yeah, they changed the packaging, too, but it's the same stuff.

But it's probably a good idea to buy up any you can find that's still in the old 'Brad Penn' labels. Some day, you'll be able to sell them to Porsche collectors for $800 each.

valvoline VR1, same ZDDP, can get OTC at walmart:} no problem with my Brit bikes.

Here's a link to the table for Mobil 1 oils:

https://mobiloil.com/~/media/a...duct-specs-guide.pdf

Bill

have several "Brad Penn" or "Penn Grade" in stock from 30,40,50,70 wt, 0-30,5-30,10-30, 10-40,20-50 along with gear oil , diesel oils, full syn 5-30 and the 30wt break in oil

all oils are in stock, Auburn CA

can ship daily or pickup