The size of the mobil 1 filter since last year has gotten 25% shorter than the one from last year.We use a truck filter according to the guy at auto zone and he said his filter was smaller.I wonder why it got smaller,and wonder if it has the same performance.

 

There are 2 types of filters that will fit on the SBC LT1. The long one and a short one, either will work you probably had the long one and bought the short one this time.

 

Which one is better?

 

the long one can hold more oil and has a bigger filter media. but it all has to go through that hole in the middle, so who knows. the bigger on would take longer to clog, though.