Contour Enthusiasts Group Archives Forums General Troubleshooting prossible problem of my 98 contour se,please help.

i did not smell it burnt,the color looks brown.it is a 2.5V6 engine.Oil efficiency is down means the same kms and route i drive everyday today cost more gas.i always use #87 regular gas from a chevron gas station.check engine light was not on.everything seems ok today.