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 Regular or premium?
#986810
02/22/10 04:48 AM
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Joined: Jan 2010
Posts: 15
OP
Need a Spot
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What fuel should I use in a 1998 Montero 3.5 SOHC?
Premium or regular? I don't have the owner's manual.
Montero 1998/Land Rover 1997/FJ Cruiser 2007
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Re: Regular or premium?
[Re: Leadfoot]
#986811
02/22/10 05:32 AM
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Joined: Jan 2000
Posts: 16,227
Web Wheeler
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What does the sticker inside the fuel filler door say?
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Re: Regular or premium?
[Re: off-roader]
#986812
02/22/10 05:48 AM
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Joined: Aug 2009
Posts: 288
Mudrunner
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I am trying to figure this out too as I know it says regular but if I use it I have a spark knock. premeium does away with it. But I have a few things I think needs replacing so I am working on it now
1987 Dodge Ram 50
2.6 5 speed
2 inch body lift 31x11.50 Swamper LTBs
4.62 gears lsd rear and welded front with lockouts
Weber carb waiting to be installed
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Re: Regular or premium?
[Re: Leadfoot]
#986813
02/22/10 06:29 AM
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Joined: Feb 2005
Posts: 2,649
Roll Me Over
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What fuel should I use in a 1998 Montero 3.5 SOHC?
Premium or regular? I don't have the owner's manual. "Regular" per the Manual and TBS
Michael j
TreadLightly! Trainer
Grasscat III, 1994 Gen 2 Five speed, Stock ( for a little while )
GrassCat II, 1998 Gen 2.5 Locked and loaded. Ran off with Hector.
GrassCat I, 1991 Gen 1 Ran off with Justice.
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Re: Regular or premium?
[Re: Leadfoot]
#986814
02/22/10 07:18 AM
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Joined: May 2000
Posts: 6,132
Trail Leader
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The new question should be : I have a motor that supposed to run on regular, but it pings. What should I do?
Kevin
87 Turbo Intercooled Raider, roller cam, torsen rear diff, LSD front diff, lockup auto with modified converter, V6 brakes, low transfer case gears...
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Re: Regular or premium?
[Re: off-roader]
#986815
02/22/10 06:32 PM
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Joined: Jan 2010
Posts: 15
OP
Need a Spot
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What does the sticker inside the fuel filler door say? It says "unleaded fuel only". I guess that means regular, However my FJ Cruiser says the same thing on filler door but the manual says premium. I don't have a manual for the Montero.
Montero 1998/Land Rover 1997/FJ Cruiser 2007
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Re: Regular or premium?
[Re: Grasscat]
#986816
02/22/10 06:42 PM
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Joined: Jan 2010
Posts: 15
OP
Need a Spot
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What fuel should I use in a 1998 Montero 3.5 SOHC?
Premium or regular? I don't have the owner's manual. "Regular" per the Manual and TBS Thanks. That is what I was looking for.
Montero 1998/Land Rover 1997/FJ Cruiser 2007
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Re: Regular or premium?
[Re: Leadfoot]
#986817
02/22/10 06:49 PM
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Joined: Sep 2004
Posts: 4,479
Roll Me Over
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I am sure Premium is recommended, but the engine has the ability to run regular just fine. My 01 Outback says premium but I ran 87 since I bought it and not a single ping knock or problem.
Richard E 1989 Montero - Stock-ish 1989 V6 Auto Raider - 5.3 Vortech Swap. 1987 Mitsubishi Starion 2.6t, soon to be 3.5 1983 Honda XL600R 
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Re: Regular or premium?
[Re: StockRaider]
#986818
02/22/10 08:34 PM
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Joined: Feb 2005
Posts: 2,649
Roll Me Over
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Michael j
TreadLightly! Trainer
Grasscat III, 1994 Gen 2 Five speed, Stock ( for a little while )
GrassCat II, 1998 Gen 2.5 Locked and loaded. Ran off with Hector.
GrassCat I, 1991 Gen 1 Ran off with Justice.
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Re: Regular or premium?
[Re: Kevin C]
#986819
02/22/10 09:19 PM
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Joined: Jan 2010
Posts: 15
OP
Need a Spot
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The new question should be : I have a motor that supposed to run on regular, but it pings. What should I do?
Kevin Check the timing. An engine made for running on regular, if run on premium, to get any advantage of the higher octane needs to run at slightly different time. But when you pour regular into it, it pings. If it pings with regular but not on premium, retard the timing. That is only true if the engine is made to run on regular.
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