Yeah, they'll adjust by pulling timing and giving you less power and more wear on internal components.
You won't save a ton of money unless you're working a minimum wage job, in which case you shouldn't be driving something that requires premium.
Holy shit, did Veeky Forums go retarded or has it always been this way?
>less power
A few hp doesn't matter on the street.
>more wear
Cars go hundreds of thousands of miles on regular gas just fine.
>hurr minimum wage job
Just because you make more money doesn't mean you can't be frugal.
Yes, they CAN go for a good amount of time, but you're running on a measure meant to protect the engine in the case that you can't find the right octane.
If the engine is recommended to run a certain octane, you should stick to it.
You will not only get better mileage, but more power and less wear on internal parts, plain and simple.
Don't believe me?
When the ECU pulls timing, the "boom" in the engine happens earlier before TDC than it would otherwise, creating more horizontal load on the rod bearings. Over time, this extra force will oval out the bearings, requiring earlier replacement than if you had just used the right fucking gas. Engines aren't tuned to run on whatever you can find on the side of the road. You can only target a certain efficiency, and if the efficiency set involves a certain variable (octane and detonation angle), it is in the interest of the engine to keep them as they are.
It's really not a hard concept, but I could explain the difference that just a bit of extra sideways load on the bearings has.
* to clarify, the tangential force on the rod bearings is not extra, but it is a larger amount than would have otherwise been directed at that angle.
>oh no ill only get 500k miles out of my car rather than 550k :(((((((((((
What does a 1995 Miata require? I normally put 95 RON, and 98 RON every few weeks. I only put 91 if I'm super broke.
Not sure about RON, but regular is fine for that engine.
...
ugh, whos right, i almost felt stupid for filling my 02 is300 with 91
yeh mayng 07 es350 many ppl say regular is fine, the new es350s with the same engine no longer require premium, toyota uses similar (not exactly the same) v6 in camrys etc. which aren't premium
dayum homie only way to fine out is try dat shit i gezz