2012 problem
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2012 Mercedes Benz GLK350 4MATIC
2012 problem
I have a 2012 Mercedes glk350 4matic. If my car idles over a few seconds it has a slight back fire to where the lights dim and the rpms drop to about 500 but if ur driving no noticeable difference. No check engine light. Has anybody experienced this before.
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Joined: Sep 2015
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2013 glk 350
As a matter of fact I just poured in a quart of denatured alcohol in my Glk, it’s about 12$ a gallon a HD. It will be -4f in Chicago tomorrow. I’ve been doing this since 1968, I’ve never had a Gasoline related issue. Alcohol absorbes water so it can be burnt, it also raises octane, this is the simplest test, get a different brand of gas like Shell or BP and pour in 3-4 cans of the Red Heat, but the yellow can is good. With this deep freeze coming it’s good advise for all .
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MBWorld Fanatic!
Joined: Sep 2015
Posts: 2,602
Likes: 347
2013 glk 350
93 is high octane , but gas is not gasoline . If I use Mobil , two blocks away, my glk and Volvo Knock. I go to BP or Costco and I get Zero knock. So my cheap **** Mobil guy is mixing the gas, cheating me, and not really selling High Octane !!!! Yes folks , it happens every day here with stations that don’t control delivery. That’s why ALCOHOL can determine many problems. It improves gasoline by removing water , and increasing octane . ( so a car can run)
