Rough cold starts

[Farmhandz]

Had it at the dealer this week for some work including attending to rough cold starts it’s had the last 6 weeks. No warning lights. I’ve used good f s cleaner a couple of times but it’s made no difference. They’re telling me the 91 non ethanol I’ve been using is ‘too rich’ for it and that I should use regular. That does not make sense to me or am I missing something?
But I’ll try it the next time I fill up.

Also had them tend to front suspension noise… which of course, they’re unable to replicate… a noise I heard 7 times throughout the day after I collected the vehicle.

Interestingly it was booked in at 9am Wednesday, only got it back 2:30pm Thursday.
They called 1:30 Wednesday to inform me they’re running behind… that’s the last I heard from them till I got a Lyft to the dealership 2pm Thursday to find out what’s going on.

 

[silver billet]

They’re telling me the 91 non ethanol I’ve been using is ‘too rich’ for it and that I should use regular.

I think you need a new dealer or just find a good independent shop. 91 is how these hemis run best.

 

[Farmhandz]

I think you need a new dealer or just find a good independent shop. 91 is how these hemis run best.

Agreed, I noticed less down shifting around town when I changed to supreme. It just runs better.