I've realised that my zed is much more thirsty than before. I commute daily to work, 5 miles per day round trip and i usually fill up £20.00 and it lasted me around 2 weeks before i need to fill up again. Recently, I have to fill up within 1 week plus. I'm doing the same mileage, same driving style, same route, etc.
My car was last serviced in January 2015 (oil change + oil filter + air filter) @ 76,000miles then air filter was replaced with HKS Hybrid sometime in June 2015. Since last oil change, i only covered around 2000 miles.
When I purchase my zed in July 2014, i could not see evidence of spark plugs being changed recently. I'm convinced it was change in P3 (i can't remember at what mileage it was done).
Oil pressure (monitor daily) and oil level (checked every 2 weeks or so), both seems fine. Tyre pressure is also good. No mod for the past 6 months.
So my questions for fellow zed owner, is this because my engine is less efficient hence burning more fuel? My zed feels normal and no sign of power loss, accelerate as it should be (or maybe it has deteriorated at a very slow rate that I'm already used to it hence can't fell it)
Or it this due to changing ambient temperature (colder now)?
I'm planning to change all spark plugs and also another engine oil change + oil filter before MOT in December 2015. Might do this earlier to see if fuel consumption could return to 'normal'.
I'm not moaning about my zed being thirsty but just worried if this is a sign of something big might happen to my zed hence wanted to rectify this as soon as i could.