A few new ones here for ya...

SPECTROGRAPHIC ANALYSIS: Passenger Car Motor Oils
Zinc ppm Phosphorus ppm
AMSOIL Series 2000 Synthetic 0W-30 1599 1288
Mobil 1 Tri-Synthetic 5W-30 1070 892
Phillips 66 Trop Artic 10W-30 922 784
Pennzoil 5W-30 1170 905
Quaker State 10W-30 4X4 Synthetic Blend 1078 856
Castrol Syntec 5W-50 972 856

ANTI-WEAR ADDITIVES


SPECTROGRAPHIC ANALYSIS: Racing Oils
Zinc ppm Phosphorus ppm
AMSOIL Series 2000 Synthetic 20W-50 Racing Oil 1675 1380
Mobil 1 Tri-Synthetic 15W-50 1500 1174
Quaker State High Perf. Synthetic Blend 15W-50 1030 960
Havoline Formula 3 20W-50 1085 834
Castrol Syntec 5W-50 972 856
Valvoline Racing 20W-50 1192 1077

Personally, I use Mobil 1 for everything. Never had any problem; the Amsoil Series 2000 looks outstading.

Higher numbers better or lower numbers better?

Higher the better.

We use the Amsoil Series 2000 20w-50 .

Hey Cruiser, So whats your new pic/recomendation? Thanks for doing all the leg work.
Jr.

i was told to use brad penn racing oil, any input, high zinc content.

Is Mobil V-Twin still the best?

If you like buildup, its still a crude based oil, with many parrifins and waxes

Is this one the dino version? Or the new synthetic racing oil?

Anyone heard of Joe GIbbs Racing oil? Supposed to be very high in anti scuff agents and zddp. I used his break in oil with great results.