How do you all get 6.2s to 300K miles

[jrsavoie]

Soy is good base. Now ya have to find out about added ethanol or methanol. Afaik there is a requirement for a label on the pump you fill up at that will say “oxygenated X %”. Usually 5% to 10%. But idk that all states require the labeling to notify.

All ours says is between 5 and 20% bio