Which one would keep the engine at it's best operating temp under just about all conditions?


http://pages.prodigy.net/jforgione/MB_S500.html


Thanks,

B52rule

__________________
1960 190D (college car), gone
1995 E300D, 325 k
2019 LEXUS UX 250h (spouse mobile)
2003 Nissan Frontier Crew Cab, 125K
2007 Jeep Grand Cherokee Overland 3.0L MB diesel, 200K
1978 GMC Classic Motor Home