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Quote:
Originally Posted by Menzy
lol sounds like you havent read this thread from the start...the timing issue has been discussed in a fair amount of detail. you could retard the timing on a vtec engine to run regular unleaded if you wanted to, thatd just be a stupid thing to do. i dont mean to be rude, but i really doubt that if youd read this thread you would say something like that
With proper DOHC VTEC, the change in cam timing is fixed when you pass the VTEC cam change point. So even if you retarded the ignition timing, the cam timing would still be advanced. Since Hi-cam advances cam timing to enable the intake valve to open earlier and for longer, you get better filling but coupled with a quicker compression stroke from high RPM, thus resulting in higher temperatures that can cause the mixture to prematurely ignite before the engine was anywhere close to sparking the plugs. So for DOHC VTEC engines that have high compression ratios of above 10:1 and make close to 100 hp/litre, it is still advised to run on premium unleaded even with retarded ignition timing.Quote:
Originally Posted by Mr_will
what im trying to say ... is if it does retard your engin why would anyone want that ...Quote:
Originally Posted by Mr_will
thats why i said it ... if it does harm your engin why do it
giddy up ultimate 98 is back in wa
Today I had no other option then to fill my car with 91 RON @ a BP station.
Ever since day 1 of ownership I have only ever filled it with 98 BP Ultimate, I can tell you for sure that Its worse thing I have ever had to do to my car internals!
The car feels sick put $10 worth in. Now need some 98RON! Just goes to show at least for me what 98 RON does for my Euro.
The Caltex near my place did not any premium petrol last night, I had to try Shell. Lucky I got some. Don't know if it is the same thing happen to WA a few weeks back.
Why didn't you put in 95 octane instead or go to another station? There are heaps of petrol stations with 98 and 95 in sydney. It's not like you're in the countryside where there are only 1 or 2 stations with premium.Quote:
Originally Posted by REV888
You're doing more damage to your engine with 91 than by putting in Mobil/Caltex/Shell 95 octane. Heck, once you try Mobil 8000 98 octane, you might even like it better than BP ultimate!
I was in the middle of nomansville LOL! There was no 95 RON and had the low level petrol light on.Quote:
Originally Posted by aaronng
Really it was silly on my part should of filled up before I left sydney early this morning but was in to much of a rush :(
Since then I am now back home and filled her up with some BP Ultimate.
Will give Mobil a try and perhaps even the new Shell 100RON
Ahhh... that's good news. With the 6MT, I've been able to go about 80km after the light is on. Can use that as an estimate of the remaining range next time.Quote:
Originally Posted by REV888
No Mans Ville.... Lots of women eh? :D
Thanks for that info aaronng there was just a pub and a BP Service Station there as for women no but alot of beer :p ;)Quote:
Originally Posted by aaronng
has nobody read my rather detailed explanation of why there is no point running anything other than 95 in the euro?
Yes we have read it - doesn't mean it is right.Quote:
Originally Posted by Mr_will
IMO the Euro runs better on 98. Until you prove otherwise (start by buying a Euro first) - I'll follow my senses and experiences with how the car drives on both 95 and 98 over someone who does not drive the car every day.