I’m at 6,700’ here in Colorado Springs and the 3.6L pings in both my JLR manual and JTR auto with 85 at low RPM driving up my driveway. I use 87 when in town and 85 when I’m heading out on hwy.
The people who told you this are behind the times. When leaded gas went away, oil companies started promoting their premium gasoline as a way to keep engines clean because it had detergents. The federal government quickly nipped that in the bud and required all their gasoline to contain the same detergents. Additive packages do vary between gasoline brands, but premium gasoline has higher octane and that's all. No other benefit; and as we've discussed, if you're not detonating/pinging, you don't need the higher octane.
Yeah, you'd better as you are raising the compression ratio when that thing is pushing air in. If it's stock compression was 11:1 (JUST FOR A NUMBER folks, don't get too picky) then when forcing air in you are well above that. I'm sure those guys - even those who install them professionally, know what the new static ratio is at various boost levels.
Its also an all-aluminum engine. Cast iron rule-of-thumb go out the window with all-aluminium
Add to that things that engineers have learned and do differently now than they did even 25 years ago. Back to the LS again - engineers put in steam reliefs in the heads to prevent hot spots - and reduce - you guesses it - ping. When there's a hot spot and the coolant in a small spot "boils" then there's no coolant in that spot to extract heat and it prevents liquid from even getting to that spot. The engineers devised ways to release that steam bubble and allow coolant to that spot. They also did other things like lower the thermostat location, etc.
My son lives in Pinehurst and had to drive to PA last weekend for an Army ALC. He was afraid his F-150 which had about 1/2 of a tank wouldn’t make it so I drove down with my Gladiator which has the additional 17 gallon LRA fuel tank and we swapped vehicles for the month. He made it fine and I found gas near me in VA...
I read where the pipeline is running full throttle again - but still shortages. Is that because of the empty tanks at the stations and truckers and all not being able to keep up or should I say - CATCH up?
I'd love to ride in a JT that wasn't naturally aspirated and see what the difference is.
So far i like the mag a lot. especially with towing, it gets the weight moving quickly the low end torque is awesome in my opinion.
That's the reason I would have for such a thing. I have the 3.73 ratio so low end torque would be a help, and on hills. Maybe I need to find out more. Thanks.
So yours sounded smoother with the higher octane? I have used 93 last to fill ups and I feel my jeep runs smoother
