Here we go again? Roush

[csx4910]

Greg, I only know of the Valero station at cave creek and union hills and the station at the paviliions that can do the 100 or 110. Are there any others you know of in Scottsdale? I have found my 511 like the mixture as well of 91 with some 100 mixed in about 50/50
Ron

[greg schroeder]

Originally Posted by csx4910

Greg, I only know of the Valero station at cave creek and union hills and the station at the paviliions that can do the 100 or 110. Are there any others you know of in Scottsdale? I have found my 511 like the mixture as well of 91 with some 100 mixed in about 50/50
Ron

56th street and Bell had the higher octane fuel a while back. There are some places out in the Gilbert area which my brother in law buys from too. I sold him my car and he runs the higher octane too.

You can buy really high octane in a 5 gallon can to keep in the garage also. When it's time to fill up dump some in the tank and mix down at the gas station.

Here's something fun. This is a stock Porsche 996 twin turbo X50 on 91 octane fuel and 100 octane fuel. The car backs out big timing to run on the lower octane and looses quite a bit of power. This is a 3rd gear pull for the Porsche with the car in motion. It's over 55 HP loss! Naturally the Porsche computer makes short work of this to keep the engine safe, but most Cobras don't have such elaborate software and hardward for engine management.

[madmaxx]

greg what oil did you use in your Roush? You always provide excellent information, thanks!!!

[eddytheb]

Read this its good food for thought and there is allot more to oil than the average guy thinks. I cant help but think that it would also effect every part in a motor in some way. Will rings seat right will bearings hold up I bet not.



http://www.racingheadservice.com/Inf...ID=-1228096506

[madmaxx]

Thanks Greg. You are right I was talking to our Mobil representative about my boat with flat tappets and asked about the additives. Their response was anything under 1K miles or less than 50 hour on a boat and you can use any oil. The additives deplete overtime, and you get no advantage starting with more additives except the additives are in the oil longer. If you are changing every 1K miles you will always be adequate protected if you are going 10K mile between oil changes with out roller lifters you need a different oil or an additive package.

Mobil 1 10W30 at walmart is $23.50 for 5 quarts, my system holds 8 so for $50 per year I'll use the synthetic for grins, heck I spent $13.00 at lunch today. I think most use an oil much to heavy such as 20W50 when they should be using 10W30 I also feel most run their engine way to cool at 170F on coolant temperature.

That being said my boat has a 140F thermostat since it is sea water cooled, 20 years old, first oil change is when filter rusted through at 7 years. It has over 1500 hours and will be on the lake this weekend. It amazes me the block has not corroded through. I start it and full throttle revers to pull it off the trailer, so I question if abusing a cold engine has any determental effects, I am sure it does but are they measurable.

[madmaxx]

Oh and as you know the Roush has roller lifters so I could go 10K between oil changes and not have any issues, then again that would take me 10 years LOL!!!