View Single Post
Old 03-16-2002, 12:15 AM
David C Klasse's Avatar
David C Klasse David C Klasse is offline
CheFrac is Back!
Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
Posts: 2,352
Originally posted by tkamiya

My 1994 E320 has the same engine as yours. On cool days with constant speed driving on highway, it levels off at 82C or so. In rush hour traffic, it goes to 102C or so.
Yup, mine is about the same. I have the same M104 motor found in your E320 in my C280, and mine is usually about 85 C or so when cruising... but will easily shoot up to 100 or so upon stopping after a long drive.

Only once did the temp ever get to 110, that was on a long ascending hill, doing 80 mph, with 3 passengers (4 people) including luggage, and a 100 F exterior temp. Anything above 110 and I'd worry a little!

Good luck. And of course, don't forget splitting the coolant/water mixture. You can even try 45/55, coolant to water, respectively, for a slightly lower operating temp.

NOTE: ONLY USE MERCEDES-BENZ COOLANT (from dealer, about $11)!!!
2006 E350 w/ 155k miles (Daily Driver)

1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
Reply With Quote