FC goes up after servicing ?

[Try_conti]

Just realised that fuel consumption for my Octy A4 seems to have gone up my almost 10% after my servicing last week. Apart from that engine runs smoother & quieter.

 

Changed from C*rlube to SPC Syn Ace 5W-40 (got it for free anyway).

 

So the question is:

1) Could it be that fresh oil is thicker and hence FC suffers ? That means have to use until it shears down before FC would improve ?

 

Anyone noticed the same thing ? Didn't pay attention when I changed the oil @5k to C*rlube last time. The only thing I noticed for the past week is that I used to hit 8.4-8.7l/100km on my journey to work but now is approx. 9.4l/100km. Same route, same driving habits.

 

Also noticed that the gear seems to be hunting a bit more. Does CnC resets the ECU during servicing so that it forgets your driving habits & 'relearn' all over again ?

[XLR8]

Bro, normally after engine oil change, the fuel consumption should be better not the other way around. Since your driving habits are the same, I believe your tires are not under inflated, then the only thing left that can affect your consumption is your engine oil. I believe its your new engine oil which cause your drop inconsumption since that is the only thing you changed so far.

[Limlien]

Either that or becoz they have idle the car too long during servicing so the ecu have not get use to your normal style.

[Try_conti]

do you know if they 'reset' the ECU after servicing ? I know my FC counter has been reset when I collected my car.

 

Its just that the gears seems to shift more frequently than it used to b4 the servicing ..... don't know whether its my butt feel / imagination or the ECU is trying to relearn my driving habits ....

[Limlien]

I guess the ecu have also been reseted.

 

Coz if not the gear will not change that often.

 

That's my guess.

[XLR8]

Normally after servicing, they will reset the ECU. Maybe you monitor awhile and see how.

[Kahlid]

Hey, I am facing the same problem. Wonder if the engine oil type is correct. The car is last serviced at CAS.

[Try_conti]

At least I know that the SPC 5w-50 oil that I used is VW certified .....

 

What oil did you use ?

[Kahlid]

can't remember, it is a house brand, I was told by the service adviser that the oil is VW 502 certified..

[Try_conti]

So CAS is also doing VWs ?

 

That's good. More choice apart from the usual Servo & CAG ......