Part of it is just in the nature of gas and diesel.
Diesel – lubricates the engine components when burned/used
Gas – washes oil away from engine components when used
Diesel – generally has lower rpm so wears less on rotating components and cylinder walls
Gas – higher rpm so equivalently so wears faster on rotating components and cylinder walls
Diesel – engines will tend to self maintain and if you drive 1-3k more miles than suggested before maintenance, it really wont hurt the engine much
Gas – engines require outside maintenance at precise intervals to run properly otherwise it self destructs
Diesel – generally built with longevity in mind and a mindset of “overbuilding” engine components and lightness of components is secondary
Gas – generally built with a mindset in finding a compromise between weight and durability which means things wont be as durable but your car wont weigh more than your house.
Diesel – often have chains and components designed to last the life of the engine or for extraordinarily long periods of time
Gas – often have belts and compenents that arent designed to last as long as the engine block but are easily, quickly, and cheaply replaceable
Basically those. Ofc you can dive into intricacies of exactly how the fluids differ and exact methodologies and what not but if u maintain your engine properly and take care of your car, there isn’t any reason your gas engine shouldn’t outlive the car.
There are some gas engines that display similar ideas about longevity and durability during design and have become extraordinarily long lived monsters. Two such engines I am a fan of are the Toyota 2JZ-GTE inline 6 and the Toyota 1UZ-FE v8. Both engines if left stock and properly maintained laugh at 200k miles and will happily do more. The average 2JZ is good for 300k plus and the average 1UZ is good for 400k plus which puts both into diesel longevity territory. And that’s just with basic maintenance and replacing things that need to be when it’s necessary.
Latest Answers