I have a 2003 Ford Ranger FX4 Level II, automatic, with 220k mi (I'm the original owner). All of the Level II's had the 4.0L SOHC engine in them, spec'd 5W-30, and have like 4 chains; one for each cam, and I think 2 for whatever else. The winter of 2015 my chains started rattling most of the time on startup/idle, and at the 2700rpm sweet spot. I replaced both the external screw-in tensioners hoping it'd cure the problem, but alas, it still rattles...this on Mobil-1 5W or 0W so it's not a dino cold flow problem.
I'm not looking to open up what is otherwise a perfectly running engine, however, I'm wondering if perhaps now that I'm coming up on an oil change, if I shouldn't try something other than straight Mobil-1 X1 ESP 0W-30 and instead either spike that with something like MoS2 or even try something else. For example should I try dumping in a quart, or even two, of Mobil-1 0W-20 and see if the lighter oil perhaps helps some of the rattle? Or, maybe I should go the other way and try running something like Mobil-1 0W-40, which is just over 30W territory?
Short of opening the engine up and actually fixing the cassettes and everything else, which means pulling the engine, anyone have advice on this? Yes, Yes, the obvious is: Sell the truck while it's running and buy a Mustang GT since it's Summer...I know, I know...
I'm not looking to open up what is otherwise a perfectly running engine, however, I'm wondering if perhaps now that I'm coming up on an oil change, if I shouldn't try something other than straight Mobil-1 X1 ESP 0W-30 and instead either spike that with something like MoS2 or even try something else. For example should I try dumping in a quart, or even two, of Mobil-1 0W-20 and see if the lighter oil perhaps helps some of the rattle? Or, maybe I should go the other way and try running something like Mobil-1 0W-40, which is just over 30W territory?
Short of opening the engine up and actually fixing the cassettes and everything else, which means pulling the engine, anyone have advice on this? Yes, Yes, the obvious is: Sell the truck while it's running and buy a Mustang GT since it's Summer...I know, I know...