Quote:
Originally Posted by xavi
Also the mechanic told me to not use more then 2% since I make short trips...
If I use 3% oil in short trips it could isolate the spark plug and get the exhaust with to much oil crap...
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Those carbon buildups around the electrode are a serious issue. Anyway, if you were using either synthetic or semi-synthetic a difference in mileage due to a change in the oil dosage would be less noticeable.