do i have to use premium gas

Asked by Jun 20, 2013 at 12:29 PM about the 2004 Mercedes-Benz CLK-Class CLK 320 Coupe

Question type: Maintenance & Repair

i now use 1/2 tank medium grade & 1/2 tank premium

2 Answers

315

If your engine has a compresion ratio of 10:1 or higher (which your car has) then you should use premium. If it has a turbo or a super charger then use premium. These are high performance engines... The tolerances are so tight that they are less forgiving when the combustion temp is off, or there are contaminants. If you use regular in a top shelf engine then you may encounter knock and a loss of efficiancy over time that offsets the cost savings of the gas and could lead to higher maintenance cost like plugs and seals needing more frequent repairs. Normal engines don't need it, but are not as efficiant. (less zoom for the boom) Even with normal engines I like to cycle the good gas every third tank just to run the detergents through, it keeps em clean and happy over time.

3 out of 3 people think this is helpful.
108,625

Premium is required in your vehicle. http://www.edmunds.com/mercedes-benz/clk-class/2004/features- specs.html

3 out of 3 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Mercedes-Benz CLK-Class Questions

Mercedes-Benz CLK-Class Experts

#1 Francisco Gomez
Francisco Gomez
Reputation 1,010
#2 jsorto
jsorto
Reputation 940
#3 bobkat
bobkat
Reputation 770
View All

Related Models For Sale

Used Mercedes-Benz E-Class
378 Great Deals out of 21,611 listings starting at $699
Used Mercedes-Benz C-Class
489 Great Deals out of 28,570 listings starting at $1,499
Used Mercedes-Benz SLK-Class
50 Great Deals out of 1,284 listings starting at $3,250
Used Mercedes-Benz SL-Class
54 Great Deals out of 2,985 listings starting at $2,900
Used Mercedes-Benz CLS-Class
61 Great Deals out of 2,210 listings starting at $7,495
Used BMW 3 Series
952 Great Deals out of 33,268 listings starting at $1,000
Used Mercedes-Benz S-Class
143 Great Deals out of 6,564 listings starting at $1,200
Used Mercedes-Benz CL-Class
23 Great Deals out of 584 listings starting at $3,700
Used Ford Mustang
380 Great Deals out of 46,804 listings starting at $1,500
Used BMW 5 Series
503 Great Deals out of 14,994 listings starting at $2,499
Used BMW 6 Series
78 Great Deals out of 3,229 listings starting at $5,399
Used Chevrolet Corvette
107 Great Deals out of 20,116 listings starting at $3,495
Used Mercedes-Benz M-Class
176 Great Deals out of 5,055 listings starting at $2,980

Used Cars For Sale