Sorry to bother but i read in the manual that the fuel this g8 GT should use is regualar/87 ... is that what you guys are using as well .. or should i be using super/97 ...

Does it really have any impact on anything ,,, ?


PS..

Can anyone give a few links for what items are best for cleaning a black car,,,, ... tips anything ,,,,

Thank you....

It's setup for 87 so you should have no problems with running 87. That is what I am currently running in ours and have had no issues. If the car detects a ping it will retard the timing so that it's in a safe place to stop the pinging.

There seems to be some debate on grades of fuel and performance. I personally would like to see back to back dyno's with regular and premium to see if there is any added benefit from running premium. But, there is definitely no harm in putting in 87. That's what it's designed to run. Until someone proves that premium adds hp or doesn't add hp for that matter I would stick to regular.

I just put Klasse All-in-One protectant on our black G8. I am going to go back over it next weekend with P21S 100% Carnauba wax next weekend. IMO, I would just clean it real well. Get a sealant or wax and take a Saturday and do a good job with the sealant or wax. That way you have a good layer of protectant. Make sure to get a GOOD wax. Some of the waxes they sell will come right off with water.

Can anyone give a few links for what items are best for cleaning a black car,,,, ... tips anything ,,,,

Thank you....

Patience :)

Patience :)

You ain't kidding! :banghead:

Yeah my truck I traded in on my G8 was black. My G8 is white :) Black cars look great when they are clean. Which is usually for only the first 1/2 hour or so after you are done washing them.

It's setup for 87 so you should have no problems with running 87. That is what I am currently running in ours and have had no issues. If the car detects a ping it will retard the timing so that it's in a safe place to stop the pinging.

There seems to be some debate on grades of fuel and performance. I personally would like to see back to back dyno's with regular and premium to see if there is any added benefit from running premium. But, there is definitely no harm in putting in 87. That's what it's designed to run. Until someone proves that premium adds hp or doesn't add hp for that matter I would stick to regular.

And make sure that a PC/tuner/Tech2 is hooked up at the same time monitoring initial timing, knock retard, and net timing. Aside from RWHP, this tells the tale of the story more than a butt-o-meter. Just because you don't hear it and everything seems fine when you go WOT, doesn't mean the knock sensors aren't picking up something and unneccesarily retarding timing.

Octane is simply a measure of the fuels' ability to resist ignition. This is particularly important in higher compression/forced induction setups where pre-ignition of the A/F mixture from running a lower octane fuel can happen causing knock.

What you need is the appropriate octane fuel for street engines for optimal resistance to pre-ignition from the heat/compression and hot spots in the combustion chamber. Usually a good 91 - 93 octane works best. You start going too high, and it's just as bad as being too low. Now the A/F mixture won't ignite when it's supposed and you get knock from the half-a$$ed combustion. High octane race fuels (100+) just don't work good in today's PCM controlled engines. Maybe a 600 cube Chevy Big Block on the squeeze, but not a N/A LSx motor.

And believe it or not, some knock retard (especially on an aftermarket cammed LSx motor) is normal and in some cases can actually give you the appropriate "net" timing you need for optimum power.