According to one of Shell's press releases regarding its high octane "V-Power" fuel, "Its cleansing action also provides daily engine protection for power with peace of mind." Also, according to their studies, "Use of low detergent gasolines can allow deposit materials to build up on your engine's intake valves and fuel injectors. This material can cause less efficient mixing of air and fuel and result in incomplete combustion in some cycles. Tests prove that, with regular use, Shell V-Power can remove those deposits that low detergent gasolines leave behind." While all of this should be taken with a grain of salt as it is their own product they are describing, it would appear that "NOPE! They are pretty much the same. It's just that the higher the rating the less it is prone to explode, it will burn and not explode" is incorrect. Its up to the owner as to what quality gasoline they want to put in their car. Patrick 1880 ? --- In dmcnews@xxxxxxxxxxxxxxx, "Tom" <tomciodmc@xxxx> wrote: > > Hello Patrick > > > > This debate is going to have many different preferences, like what oil to > > use (10W30) :) but > > if you are going to store your car for the winter or not drive it much, > > put in a higher > > octane. 91 breaks down slower than say the 87 would sitting in the tank. > Sorry, but its not true. They break down at the same rate. > The oil is a completely different subject.. there are preferences, different > oil for different temperatures, but with fuel the engine is designed for a > specific 'grade'. > > > > Also, as I recall, > > in the '81 owners manual all of the readings for gas mileage, performance, > > etc and all of > > those specs say that the car was tested using 91 octane fuel. > It was mentioned that it is recommended to use 91 octane fuel, BUT that was > for Europe. We use different method for determining the octane rating. 91 in > Europe is the same as 87 in the US. > The owners manual that I have states clearly: > Your DeLorean is designed to operate at factory specifications at UNLEADED > GASOLINE only of 87 anti-knock index (R+M)/2 (91 research octane number). > If you look at the pump at a gas station there is a formula right under the > octane rating and it is (R+M)/2 in the US. > The DeLorean was designed for 87. > > > Also, the higher octanes like Shell V-Power typically have more cleaners > > in them that help clean out fuel injectors and the like (or so I > > am told) > NOPE! They are pretty much the same. It's just that the higher the rating > the less it is prone to explode, it will burn and not explode. > > > Hope this helps > > Tom Niemczewski > jamesik@xxxx > VIN 6149 > Save the dream so you can live the dream... To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/