my daughter has a Lincoln and it requires a 5 W 20 oil weight nothing else .
my Nissan pathfinder require 5 W 30 -10 W 40 oil . weight
when I do an oil change on my daughters Lincoln you can see the timing chain inside the oil fill hole and its pristine clean - now on my pathfinder the parts inside the oil fill hole look darkened used like a 57 Chevy would look like ,so if I used the 5 W 20 oil in my pathfinder would it be a cleaner engine . both use the same name oil and filters-Castrol oil
thanks for an answer
my Nissan pathfinder require 5 W 30 -10 W 40 oil . weight
when I do an oil change on my daughters Lincoln you can see the timing chain inside the oil fill hole and its pristine clean - now on my pathfinder the parts inside the oil fill hole look darkened used like a 57 Chevy would look like ,so if I used the 5 W 20 oil in my pathfinder would it be a cleaner engine . both use the same name oil and filters-Castrol oil
thanks for an answer