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  #1  
Old May 26th, 2012, 01:46 AM
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David
1995 Defender 90- Yellow- Soft Top
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premium fuel?

hello all!
new here if you could not already tell (after all im still looking for the spellcheck)

in my '95 defender 90 i use regular fuel. recently i was cleaning the mold build up out of the pages of my land rover's owners manual. i saw that premium (91 octane or better) grade fuel is recomended.

with 137k + on my D90 im still wondering if i am doing harm using regular gas? after all i get only 12 mpg! HELP PLEASE
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  #2  
Old May 26th, 2012, 08:39 AM
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Nathan Patterson
1994 D-90
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12 mpg is not far off. In fact it's normal if you have a heavy load of accessories or an older truck. I can get 15 mpg in my 1994 D-90 but that is with an empty truck immediately after a new exhaust and plugs.
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  #3  
Old May 26th, 2012, 08:54 AM
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Bill Adams
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You are doing harm if you experience pinging (preignition) under acceleration or heavy load. Otherwise, no not really.
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1966 109 5 door wagon 300Tdi "spermaceti fueled"
1994 RRC LeWiB "ruining the air behind me"
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  #4  
Old May 26th, 2012, 09:40 AM
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Phillip
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I've got armor and 255's and mud flaps I can still get 15 if I drive conservatively. My rNge rover gets 8-13. Yeas you should use premium fuel it will help your fuel economy, I always have used BP or Shell I get best results from shell.

As for 12 mpg is your truck stock? Have you done much maintenance on it?
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  #5  
Old May 26th, 2012, 12:49 PM
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Bill Adams
66 109 sw 94 lwb
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Yup, what he said. I'm getting about 17 plus a little on the highway with the LeWB, 4.2 V8. ~120K on the engine. Running el cheapo regular gas with 10% ethanol in it.
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1966 109 5 door wagon 300Tdi "spermaceti fueled"
1994 RRC LeWiB "ruining the air behind me"
1968 2A 88

All my troubles are Rover
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  #6  
Old May 26th, 2012, 12:55 PM
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If you're still at sea level, Huntington Beach, you should run the premium. At high elevation, regular is fine.
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Old May 30th, 2012, 09:40 PM
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David
1995 Defender 90- Yellow- Soft Top
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wow! thanks for all the help. it is as stock as they come (except the a/c- but i never use it). and im not always a conservative driver. i changed the oil over the memorial day wkend. no one had my air filter in stock, so that will come soon.

as for changing the spark plugs; any suggestion on the type? or does anything decent work well? also where can i look up the gap for the plugs?
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Old May 31st, 2012, 07:09 AM
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Phillip
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Quote:
Originally Posted by petminded View Post
wow! thanks for all the help. it is as stock as they come (except the a/c- but i never use it). and im not always a conservative driver. i changed the oil over the memorial day wkend. no one had my air filter in stock, so that will come soon.

as for changing the spark plugs; any suggestion on the type? or does anything decent work well? also where can i look up the gap for the plugs?
Plug gap is in the owners manual.

NGKBPR5EY for plugs.
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