Quote:
Originally Posted by shertex
FWIW our average mpg on the 98 E300 is 26.5. Best tankful I every got (all highway) was 30.6. And everything is in perfect working order. So there's nothing unusual about low 20's for all city driving.
Not sure where you got the impression of at least 25 city. There some people who boast of 35-38 highway on these cars...I just don't believe it.
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I've hit 34.5 at 70 with ac on very little stop and go.. it's possible. the car has to be perfect tire pressure, no leaks and rpms. the sticker says 26 city.. I get about 24 regularly around town with over a half a million miles
Quote:
Originally Posted by vstech
Big problem with oil change chemicals is the oil cooler and associated hardware keeps a percentage in the motor...
Best practice is change oil regularly...
Leave the chemicals on the shelf.
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yeah I'm not touching detergents. if you change oil often with good oil and you shouldn't have goo in your oil.
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Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k