why can't use 110 leaded on LT-1?
I know it will damage the oxygen sensors. but if I change the sensors every time I change the spark plugs can I use it.
2 years ago the only fuel we have here in Saudi was 95 leaded no more option. after removing the cats the cars run fine with no problems. "some cars imported used from the U.S run years even with cats on, only after over-heating problems the change or remove them".

THE COMPRESSEON RATIO OF MY CAR IS 12.2 RUNNING 95 UNLEADED
ONE FROM REAL WORLD IT WORTH THE 1.8 POINTS IN THE CR

 

You can put what you wish in your car, but it was designed and engineered to use unleaded fuel. EGR, O2's and CAT will be affected sooner or later. Also, you can expect higher compression problems due to carbonation on the piston tops and CC, as well as a higher probability of sticking rings and a generally dirtier internal engine via leaded blow-by...
If that's all that's available, I guess you don't have much of a choice, but expect higher maintenance cost and emission problems...

 

If I were in your situation, I'd just pull the cats and the O2 sensors and go to an open-loop calibration for your PCM. This is what GM did on the B-bodies that were exported to the Middle East.

 

Leaded fuel is good for the car, very good, it is a lubricant as it is a catalist(right word? to burn?) anyways it will kill your o2's almost instantely, I belive your o2's will read really high all the time, I belive thats what leaded fuel does.

 

leaded fuel is good for the valve seats it helps them seal better. but with cars that have CATs if u run it enought it will eventually clog up that cat.

 

The rated life of OEM O2 sensors is 50 hours on leaded fuel. So, you would be replacing them every 2,000 miles or so, and the readings in between replacements would be suspect. I've still got my OEM sensors connected to my stock PCM, even though the MoTeC computer manages the engine. The right sensor still appears to put out decent readings after 2 years with an occasional diet of VP C-16 (6 gr/gal lead, 117.5 octane). The left sensor is reading about .200V low, and has been after about the 5th or 6th dyno pull.

 

any one please

 

What additional info are you looking for?

To run leaded fuel on a regular basis:

1 - You can program the PCM to operate in open loop, and the O2 sensors and cats can be removed. My engine operates this way.

Or.....

2 - You can leave everything the way it is, and replace the O2 sensors every month or so.