Two Very Interesting Questions

[aztech3]

Have 2 questions

I have a standard IS200 sport, no mods

1) Do all Is200 whine during low revs? Mine does.

It’s easily heard. I bet others think I got a supercharger.

2) Would continues use of Shell Optimax do any harm to the engine?

Has anyone timed the 0-60 figures, any quicker than 9.5 sec?

[Fidgits]

in answer to 2, No, its actually better to continue using Optimax IMHO.

[Fmrl]

in answer to 2, No, its actually better to continue using Optimax IMHO.

I'm still not sure if Optimax really makes much difference in terms of performance. Maybe the Altezza would benefit from it (AFAIK Japanese "standard" unleaded has a higher octane) but the IS200 is designed to run on 95RON.

Optimax is probably "cleaner" than some of the rubbish that's out there though!

[LennyLexus]

Optimax all the way.

[aztech3]

Ive read a few posts that most Optimax users found an inprovement in performance at lower revs.

Which is good enough. Like to try this out

As from the first question

Any chance of describing how your IS200 sounds at low revs?

Cheers for all your answers :)

[Fidgits]

in answer to 2, No, its actually better to continue using Optimax IMHO.

I'm still not sure if Optimax really makes much difference in terms of performance. Maybe the Altezza would benefit from it (AFAIK Japanese "standard" unleaded has a higher octane) but the IS200 is designed to run on 95RON.

Optimax is probably "cleaner" than some of the rubbish that's out there though!

I did an experiment last year on fuels.. read about it here...

[LennyLexus]

Any chance of describing how your IS200 sounds at low revs?

hrrrrrmmmm hrrrmmmmmmmm hrrrmmmmmmmmmmmmmmmmmmm :shutit:

[Dpk]

Do you need to change anything if running shell optimax ?

[Fmrl]

I think it's more of a grrrrrrrrrrmmmmmm grrrrrrrrmmmmmm grrrrrrrrrrmmmm noise - a sort of throaty, growly noise.

(I can't believe I'm trying to impersonate my car on a mailing list )

[immx]

hrrrrrmmmm hrrrmmmmmmmm hrrrmmmmmmmmmmmmmmmmmmm :shutit:

PMSL

I know that sound!!!!

I do know the wine tho, mine does it to!

[LennyLexus]

Do you need to change anything if running shell optimax ?

Yes reset the ECU before you fill up, and make sure the tank is as empty as you can get it. look in the knowledge base on how to do it.

[aztech3]

Send a wav file Raz

maybe Auto are quieter

[Scorpion]

maybe Auto are quieter

So that would make my manual noisier than yours which it isnt as she purrs like a kitten no whine :P

[Fidgits]

Do you need to change anything if running shell optimax ?

Yes reset the ECU before you fill up, and make sure the tank is as empty as you can get it. look in the knowledge base on how to do it.

No you dont, you can just fill up, though without resetting the ECU it may take a tank or two before the ECU adjusts.

[aztech3]

So far only only one replyed with a whine noise

Anymore?

I reckon its down to the noise of the gear box. Like an Austin Metro

Did I say Austin Metro? I had one

[aztech3]

Mines a Manuel and whine at low revs

[LennyLexus]

Send a wav file Raz

maybe Auto are quieter

I was gonna do that, i used to be drum n bass/jungle producer sample bloody anything but i aint got my MD recorder no more

anyways the lex is too quiet to pick anything up. would have put the mic in engine bay and then record.

I've heard autos get noisier as they get more miles :(

[whitie]

whine noise

Only when the missus is in the car!

[LennyLexus]

Do you need to change anything if running shell optimax ?

Yes reset the ECU before you fill up, and make sure the tank is as empty as you can get it. look in the knowledge base on how to do it.

No you dont, you can just fill up, though without resetting the ECU it may take a tank or two before the ECU adjusts.

spending 45-90quid for sake of 1minutes work.

[aztech3]

one thing i forgot to explain

about the whine noise, if I put press the clutch peddle leave my foot there and rev the engine at low revs, the whine is gone, but when clutch is released and rev the engine at low revs again, whine noise is heard.

Is this whine noise down to a noisey gearbox, this whine noise is starting to remind me of my old Austin Metro

[whitie]

Its not one of your belts needs a bit tightening? is it quite high pitched? it could just be that

[aztech3]

Yes it is quite a high pitched kind of wirrrr or whine noise, if it is the belt, does this mean if I press the clutch the the belt stops moving.

Thanx for your reply

[whitie]

does this mean if I press the clutch the the belt stops moving

Wouldn't of thought so, but its always worth a try, if you open your bonnet your see the belt and bolt sticking out on a arm (the nut is pointing away from you) Check to see if the sound is from here, if it is just move then bolt along the arm a bit.

[Fidgits]

I think its more likely pressing the clutch removes the load on the belt, and therefore removes the cause of the slipping which is causing the 'noise'

[whitie]

Yeap good point didn't think of that, it be taking the load of the system