Engine Oil Additives

[laxman0324]

I use the mobil1 extended performance filter in my pathfinder, the oil is slightly dirty now at 4k, so i think i will give it a look at 5k and maybe go to 6k...thanks for all that good info

[zonianbrat]

X2 thanks for the good info and keep it coming!!

[02silverpathy]

I use Marvel Mystery Oil 1qt replacement at oil change...seems to keep me at the top end of the MPG chart....really worked good in a friends 140K Escape. This stuff is ancient but really perks up small engines, like power washers and mowers! Goes in gas or oil...I have had no increase using it in gas, so I do use Lucas gas treatment, for further lubrication and MPG--not Injector cleaner as it is more of an oil than a solvent.

 

I use Lucas Tranny fix regularly, this stuf really does improve shift times (or put them back to spec), however just like the fluid is suseptable to wear. After about 10-12K the vehicle will start to go back to slow shifts. In the path the Lucas lasts even less (and I do have a large Hayden tube/fin style cooler), probably due to heat exchange.

 

I am cautious about the Lucas oil treatment as it really co-agulates well, not sure if that is what todays engines need or if this would gum up the works (turbulence maybe?).