Ordering everything to flush coolant, add coolant filter and replace Oem coolant with EC-1 stuff, you guys with 6.0 what coolants to use?
1. Zerex CAT-EC-1
2.Delo EC1
3. Shell Rotella T
4. Shell Ultra ELC
Also Im changing the oil and usually use Motorcrafe 15w-40 but was considering getting a higher end oil in her, what of these do you guys recomend for the 6.0?
1. Motorcraft 15w-40
2.Rotella T 15w-40
3. Delo 40
I know all of these are safe and recomended for 6.0 PS, just wanting advice on what you used and liked. Im also now mixing TC-W3 (.5oz per. gal.) and Cetain Booster upon every fill up.
