Got my 2016 PW a few weeks ago. Laramie, very nice! It was my understanding that the 6.4 was fine on regular grade gas (87 octane). I was perusing the online manual, and it stated that both the 5.7 and the 6.4 recommended 89, though 87 was acceptable. I filled it a few times already with 87 octane, sounds fine, no knocking. So, I guess it is 'acceptable', but wonder if my performance and/or mileage may improve with the recommended 89 octane gas.
So, wondering what others are using, and if I can continue with regular grade. I understand the bigger 6.4 is a detuned 5.7, though obviously bigger. That being, regular should be fine in the 6.4.
Thanks.
So, wondering what others are using, and if I can continue with regular grade. I understand the bigger 6.4 is a detuned 5.7, though obviously bigger. That being, regular should be fine in the 6.4.
Thanks.