So I just bought a brand new Toyota 86. I have had several new cars from different manufacturers. I have always followed manufacture recommended break in procedures espically for high proformance cars, and always had excellent results. I know cars no longer come with break in oil and the parts are all machined to higher tolerances than they use to be. But the dealer and manufacture both recommended the first oil change at 7500 miles. Brake in the engine under 4K rpm for first 1000 miles ect.
If there is debrie and metal shavings in the engine and oil during break in? Why would you wait 7500 miles to get that out even with synethic oil. I think it’s just to save $ from the dealer.
I have heard that some people say don’t brake in the car just. Drive it like you stole it cause it doesn’t matter the new technology and tolerances are so go it dose not effect the car.
So what is right if you want the most proformance and long life from your car?
My second part is my cars manufacture minamum Octane rating for gas is 93 octane. In Nevada we can only get 91. Because my car has an extream high compression that is why 93 is recommended over 91. I have been blending 91 and 100 to get 93. I have notice that 91 makes the car run rough an it under performs. With newer cars I know the ecu will retard the timing but I am under the impression that this will effect my cars engine life and performance in the future. Octane booster and other additives are crap I just want my car to last and preform well through out its life. What do you think?