Regular Gas?

[ezratty]

I know that this is probaly a horrible question to be asking, but what are the possible effects from using a lower octane fuel in the Marauder rather that the prescribed 91 octane.

[Rider90]

Detonation. If you want to use a lower octane, contact a tuner on this board and he'll make a program with less timing advance.

EDIT: Need to stop adding words where they don't belong...

[MarauderMark]

Detonation. If you want to use a lower octane, contact a tuner on this board and he'll make a program that with less timing advance.
^^^^Yep what he said^^^^:up:

[fastblackmerc]

I know that this is probaly a horrible question to be asking, but what are the possible effects from using a lower octane fuel in the Marauder rather that the prescribed 91 octane.
The worst effect would be blowing the motor. Lower octane will cause pinging which is DEATH to an aluminium motor.

[twolow]

Its not worth saving less than 4 bucks at the pump.

Quite ordering super sized meals instead and its better on you and your car!

[Bluerauder]

The worst effect would be blowing the motor.
I think that the "worst effect" would be walking home knowing that this was probably not a very good idea to begin with .... :rofl:

[cyclone03]

When I know I'll be just running gas through the engine,like a road trip to Ca.,I run regular.
But there are rules.
NO WOT ever.
No greater than 1/2 throttle EVER.
Do not exceed 3000rpm ever.

I have a DR performance tune and have NEVER had detionation if I stayed with the above rules.
Lug the engine with 86 or 87 and it will ping.
If your driving around town in cummuter type traffic and your agressive stay with 91-93.
If you tend to drone along you can drop down to 89 but no WOT EVER!
YOU can not up hold the Marauder pride against ricers with regular it will ping above 1/2 throttle from a stop.

[twolow]

And all that is worth around $4 bucks?

Gesh, I must be loaded to not worry with such stuff...

...I'm sure you blow money on junk food during this road trip. If you bought your junk food from Kroger before leaving town v/s paying premium prices at the gas stations for junk food you could save that $4 bucks plus some and actually enjoy the road trip.


When I know I'll be just running gas through the engine,like a road trip to Ca.,I run regular.
But there are rules.
NO WOT ever.
No greater than 1/2 throttle EVER.
Do not exceed 3000rpm ever.

I have a DR performance tune and have NEVER had detionation if I stayed with the above rules.
Lug the engine with 86 or 87 and it will ping.
If your driving around town in cummuter type traffic and your agressive stay with 91-93.
If you tend to drone along you can drop down to 89 but no WOT EVER!
YOU can not up hold the Marauder pride against ricers with regular it will ping above 1/2 throttle from a stop.

[ParkRanger]

I checked on this with a person who has a PHD in combustible engineering and a degree in motor mechanics - he said "it will make your car fart."

PR

[gpfarrell]

I think the worst side effect would be watching those ^&** V6 Honda Accords pulling away from you!

[ezratty]

I guess that answers my question. I shouldn't save a buck to blow an engine because I know that more times than not that pedal will be pushed to the floor.

Thanks to everyone for the info:)

[CRUZTAKER]

Exactly.

If you were to visit the Lincoln Aviator/Navigator forums...you would see those folks just plain old don't get it and constantly tell folks it's ok fine to use 87 octane in those beasts. :shake:

Why would the 4.6 in the Marauder be any different than the 4.6 in the Vator? It's the same motor.

I am done trying to tell them.

If you have a tuner, and have a program making proper EEC adjustments, you CAN run lower octane.

It's just NOT woth the trouble for what you save.

[MENINBLK]

It doesn't make a difference what tune you run.
87 octane and a 10.5:1 compression motor don't go together
no matter what the timing.

Pre-ignition (pinging) is the fuel/air mixture igniting itself due to compression.
As the mixture is compressed it builds up heat.
With 87 octane, the mixture is MORE VOLATILE, and EASIER to ignite
than 91 octane or higher.

So if you use ANY octane lower than the minimum recommendations,
you run the chance of blowing your engine and leaving
all kinds of pieces of it in the street.

JUST DON'T DO IT !!!

[423REED]

I know that this is probaly a horrible question to be asking, but what are the possible effects from using a lower octane fuel in the Marauder rather that the prescribed 91 octane.

PLEASE DON'T DO IT! The Marauder is designed to run on 91 octane, and best on 93 octane. Running anything else is taking your engine's life in your hands! My 2004 Marauder runs really great on 93 octane BP gas. I have two premium gas cars. My other car is a 1994 Ford Taurus SHO that also runs on premium only.
JIM

[merc6]

nothing but cheveron 93 in mine. If a dealership gave you 87 do you need to change the fuel filter? I was told I was supose to.

[Blackened300a]

nothing but cheveron 93 in mine. If a dealership gave you 87 do you need to change the fuel filter? I was told I was supose to.

I would say no. The new 93 octane would flush right through the filter and mix with the 87. Run a full tank of 93 maybe with some octane boost to even out the mix

[merc6]

cool thats what I did...for 4 tanks per dumb *** dealers instructions before they would drop the tank for there sender issue.

[FordNut]

We ran regular 87 in the wife's stocker for about 70k miles with no seriously adverse effects. Then it started to develop a little tip-in detonation at low rpms. Took it in for flushing the combustion chambers and cleaning the injectors, fixed it. Running 93 now.

[Marauderman]

too bad the "$4 bucks" used in this discussion isn't the answer Mac is looking for--has already been guessed--and he said that aint it--------

OK --Back on thread----

[Romo53]

:P You guys are a trip!