According to Chemdog who was connected with the people who discovered OG Kush. It was really an S1 of Original Diesel - not straight Chem 91 S1. I was originally under the impression that it was a Chem 91 S1, but stand corrected.
[FONT="]Original Diesel = (Male) [/FONT][FONT="][ [/FONT][FONT="](M) [/FONT][FONT="]SensiNL X [/FONT][FONT="] (F) [/FONT][FONT="]MassSuperSkunk ] X [/FONT][FONT="](Female)[/FONT][FONT="]Chem[/FONT] '91 (aka Chemdawg)
S1 = a female was sprayed to produce seeds without a male. Essentially crossed to itself.
This is a Sour Diesel dominate Pheno of RP Sour Kush, my boy grows some killer Real Sour D and this RP SK Taste exactly the same But with an extra little kick of OG, he tells me he really likes the RP SK better because u get all the Diesel with ah tiny bit of Kush, really good, its became the most sought after Cuts around,( SK#6 ) Yield better too.
Best weed ive ever smoked ( But i love the real Sour D 98% as much .)