car running slower after service?

[fezp]

hey all, i have a dc2r. got 112kw at dyno couple weeks ago.. today i noticed that my car's running a lot slower than before.. takes ages to get the revs up during vtec it seems fine
had my car serviced just last week. minor 80k service. changed oil filter etc.. nothing major.
bought new tyres but doubt they'd be slowing the car down?

all help appreciated!!

[Sexc86]

Did they play with anything to do with your ignition timing?

[fezp]

doubt it? how could i check to make surE?

[deceivin]

what oil did you use?

did you pour petrol today? maybe bad batch of petrol?

[kikxz]

did you just replace the tires or did you get different sized rims/tyres?

[fezp]

just replaced the tyres.. everything else the same
they used EFL oil.. i've never heard of it.. also stuck a giant EFL sticker on my engine bay without asking me. *angry*

my revs stay the same even when i gas it a little bit.. just doesn't pick up as it used to. My friend says i should let the oil settle in.. or after if it doesn't get any better, change it.
What do you think?

Thanks
p.s just filled up petty tonight and still feels like shit.

[VTECMACHINE]

Who serviced the car? Did you leave it there overnight or anything.

What exactly was done?

[NSPYRE]

find out what viscosity oil they put in

[VTECMACHINE]

find out what viscosity oil they put in

This is very true.

In a DC2R/Honda/most NA cars, you should really only be using 5W-30, 0W-40, 10W-40, 10W-30 or the likes. They might have put a 10W-60, or 15w-60 or something just as thick in. This would explain the loss in response.

[fezp]

Who serviced the car? Did you leave it there overnight or anything.

What exactly was done?

Hanny's performance.. nah didn't leave it overnight. oil change, fuel filter, spark plugs (dont know whether they replaced it cause there's no price next to it)

[deceivin]

just replaced the tyres.. everything else the same
they used EFL oil.. i've never heard of it..


ELF oil you mean?
i'm running ELF oil in my dc2r now and no complaints here.

[aaronng]

Go run your car on the dyno again to find out if you really did lose power or if it is your imagination. :p
Have you checked your tyre pressure?

[fezp]

tyre pressure should be okay, just bought new tyres after my service. could it be if they used a thicker oil than before that could be a problem? like if the oil now is thicker than the HONDA OEM oil i always get? I have heard that the ELF oil they put is 10W 50 now.. not sure what the honda oem one was...

[aaronng]

tyre pressure should be okay, just bought new tyres after my service. could it be if they used a thicker oil than before that could be a problem? like if the oil now is thicker than the HONDA OEM oil i always get? I have heard that the ELF oil they put is 10W 50 now.. not sure what the honda oem one was...

Honda oil is 10w-30. I have used 5w-30 ELF oil before and it was fine. 10w-50 is a bit thick and might rob a little bit of power.

[adu]

yeah dey service my car with elf oil now..

hmmmm

[VTECMACHINE]

Hanny's performance.. nah didn't leave it overnight. oil change, fuel filter, spark plugs (dont know whether they replaced it cause there's no price next to it)

Knew it!!! LOL.

Did they do the "special" Hannys performance modificaton... ie: punching in fuel reg, and jumping a tooth on the cam gear, to advance timing?

I notice a massive difference in engine response from going from 5W-30, to 10W-40. So the 5W-50 or what ever it was, it most likely robbing you of response/power.

How many KM's on the engine?

[fezp]

80k now. just did the 80 service at 79k

[VTECMACHINE]

In that case, i'd be using 5w-30, or 10W-30... maximum thickness 10W-40.

Very low Km's on the DC2R... FTW! :)

[fezp]

i dont wana have to pay hannys again for changing the oil for me.. since it was their stupid fault in the first place.. i was happy with what i was getting from them to begin with. gah.
hmm any suggestions? btw are we sure that it's the oil?

[VTECMACHINE]

i dont wana have to pay hannys again for changing the oil for me.. since it was their stupid fault in the first place.. i was happy with what i was getting from them to begin with. gah.
hmm any suggestions? btw are we sure that it's the oil?

I, Myself... am pretty certain that if they did use 10W-50 you will loose engine response. Like I said I can notice a major difference going from 5-30, to 10-40. I could only imagine what 10-50 would feel like...

Also if that's pretty much all they changed, it's most likely that. It does explain the symtoms... Changing oil would be the cheapest fix. Just DIY, it's easy, or head on down to Touge Tune or something...

[A-man]

yeh but if u do the service urself and only change the oil, filter, possible coolant, thats all most people do.. what bout leads, idle control valve clean out, throttle body clean out. report leaks.

these people should b doing a better job.... me on the other hand hate payin people for things i can do myself... hence y i dont.. but im picky

anyways i dont think the oil would have to much to do with it... is the intake blocked? or something maybe rag in there or something... if ur not happy take it back.. thats y u pay people to do stuff..

[T-onedc2]

tyre pressure should be okay, just bought new tyres after my service....
in my experience they never get the pressure high enough so I always check it immediately

[VTECMACHINE]

anyways i dont think the oil would have to much to do with it... is the intake blocked? or something maybe rag in there or something... if ur not happy take it back.. thats y u pay people to do stuff..


10W-50 in a B18C would definately make the car run like shit. hehehe a mate put Castrol Edge 15W-60 in his VTi-R once. The thing was having trouble cranking over, barely idled, and lost all power.

[outatime]

yes it's your oil! i noticed that too on my car.. kinda struggles to pick up the revs.. they also put 10w50. it's to thick which causes drag on the pistons.. on my next oil change i'll ask for something thinner like 10w40

[outatime]

Honda oil is 10w-30. I have used 5w-30 ELF oil before and it was fine. 10w-50 is a bit thick and might rob a little bit of power.

is 5w30 ok to use on summer weather?

[A-man]

maybe u got to much oil in there :P ur surposed to stop when it leaks out the dipstick :P


i didnt realise it mattered that much... guess coz they rev hard

[adu]

hmm dey put thick oil in my dc2 aswell..

u guys reckn i shuld change it back?

what thickness agen for dc2 ?

whats your recommendations?

thanks guys
sorri to hijack thread

[outatime]

they put elf 10w50 on my ek1..

today after reading this thread i went there and had an oil change for only 50 bux..this time i chose the elf 5w30. they also gave me the bottle in case i need to top up.

car is noticeably responsive and accelarates faster. this is because the thinner viscosity has less drag on the pistons/rings/bores.

i think it is a good thing for the oil to be thin when cold so that oil pumps quickly to the working surfaces (90% of engine wear occurs at start up according to figures). It's also good for maximising power and economy, so long as the engine isn't eating it at a fast rate.

[aaronng]

is 5w30 ok to use on summer weather?

Yes, it is fine even in summer. In contrary to the 5w-50 and 10w-50 oils, which thin as the viscosity modifiers break down, the 5w-30 doesn't thin much because it has very little viscosity modifiers (5w and 30 is not a big range). I have found that the 5w-30 actually thickens as you use it because of the carbon produced from combustion going into the oil.

[fezp]

Okay, well i went and got my oil changed to the honda one does pick up better, but im still confused as to what it used to be like.. guess the only way i can tell is if i dyno it again.
does anyone know how much it cost just for 1 dyno run and not 3?
btw tyre pressure was all over the place so i changed it all to 40 (bridgestone adrenaline) is this alright or too much?

thanks for help.
btw honda 10w-50 vs ELF 5w-30 which would you prefer? (fuk the 10W-50 no way am i going for that ever again)

[Lerlo]

It could just be the weather man. My car runs much slower on Hot days....

[fezp]

nah the problem i had was noticeble on mon-tue night when it got really cold.

[aaronng]

Okay, well i went and got my oil changed to the honda one does pick up better, but im still confused as to what it used to be like.. guess the only way i can tell is if i dyno it again.
does anyone know how much it cost just for 1 dyno run and not 3?
btw tyre pressure was all over the place so i changed it all to 40 (bridgestone adrenaline) is this alright or too much?

thanks for help.
btw honda 10w-50 vs ELF 5w-30 which would you prefer? (fuk the 10W-50 no way am i going for that ever again)
I like 36 psi. But it is up to you. If it is not harsh, then 40 is ok.

Do you mean Honda FEO 10w-30? That is a mineral oil and I would choose the Elf 5w-30 over it (synthetic) if I had deep pockets. Otherwise, both work fine. Change FEO every 5000km or 6 months, whichever comes first.

[outatime]

^^ yeah get the elf one dude.. like what i said earlier, i went to Hannys today and changed the oil from 10w50 to 5w30. they only charged me 50 bux - that's the oil and labour. pretty cheap considering the elf oil itself is already 50! so the labour was technically free. why waste your time diy'ing if a pro mechanic could do it for ya. only takes 10 mins.

[aaronng]

Next time for any servicing, ask which oil they are going to use before they start working on your car :thumbsup:

[fezp]

well they normally put 10w 30 then one day decide to just change their minds without informing me.
anyway i was wondering compared to 10w 30 how long does 5w 30 last? (i know you said it gets thicker) but will it last say.. 5000ks with a few hard hits every now and again?

[outatime]

the elf 5w30 is almost similar if not better than the feo. it is synthetic. feo is semi-synthetic.

elf has a thin viscosity (5w) for cold temp. meaning you can start your car and the oil will pump faster to the engine components than the viscosity (10w) of the feo. the engine also warms up quicker.

[aaronng]

the elf 5w30 is almost similar if not better than the feo. it is synthetic. feo is semi-synthetic.

elf has a thin viscosity (5w) for cold temp. meaning you can start your car and the oil will pump faster to the engine components than the viscosity (10w) of the feo. the engine also warms up quicker.
FEO is mineral. Fully mineral.

[aaronng]

well they normally put 10w 30 then one day decide to just change their minds without informing me.
anyway i was wondering compared to 10w 30 how long does 5w 30 last? (i know you said it gets thicker) but will it last say.. 5000ks with a few hard hits every now and again?

Elf 5w-30 lasts 10000km on mine. I can't feel any difference even at 10000km unlike with a mineral oil where my engine goes rough after 7000km.

[adu]

what happens if i leave the 10-50w oil in dere..

bad idea?

[VTECMACHINE]

Okay, well i went and got my oil changed to the honda one does pick up better, but im still confused as to what it used to be like.. guess the only way i can tell is if i dyno it again.
does anyone know how much it cost just for 1 dyno run and not 3?
btw tyre pressure was all over the place so i changed it all to 40 (bridgestone adrenaline) is this alright or too much?

thanks for help.
btw honda 10w-50 vs ELF 5w-30 which would you prefer? (fuk the 10W-50 no way am i going for that ever again)

I use 38psi - 40 psi on 16's on my DC2R.

I'd pick the 5W-30 Elf, also Castrol Edge 5W-30 - I like this oil very muchly..

[aaronng]

what happens if i leave the 10-50w oil in dere..

bad idea?
You lose power and have higher fuel consumption. The thicker viscosity causes more resistance to movement in the engine, thus generates more heat.

[fezp]

i have it on 40psi on my 15"s
could notice the difference from 36 (which they were around before) i took a bend at 100 now i can't even take it at 80.. way scarier

[adu]

hmm thanks arrong ..

il go get my oil re-changed to 'Castrol Edge 5W-30 '

thnaks guys n girls

[outatime]

guys change your oils to elf or castrol 5w30.

today i got to test the elf 5w30. major difference! car accelarates faster. especially at the lights.. i blitzed all the cars even if i was just shifting at 2.5 rpm. lol unlike with the elf 10w50 the car was struggling at takeoff. i always get honked by the cars behind for being so slow..

[VTECMACHINE]

i blitzed all the cars even if i was just shifting at 2.5 rpm.

Are you sure the other cars were trying to race/blitz you. Perhaps there were a bunch of sensible people on the roads.

[outatime]

Are you sure the other cars were trying to race/blitz you. Perhaps there were a bunch of sensible people on the roads.

read between the lines. i wasnt racing them and neither do they. just normal driving. 2.5 rpm isnt racing. if was racing them i would shift at 6.5 rpm. i'm just saying that even shifting at 2.5 the car accelarates a lot faster.. with the elf 10w50, shifting at 2.5rpm was a struggle and car was slow so i had to shift at 3.

[VTECMACHINE]

Cool. It's amazing how different viscoity's of oil affect engine performance ey...

[outatime]

indeed. some say try 0w20! you only live once lol.

[VTECMACHINE]

Balls, just use Water, or cooking oil. LOL