regular gas?
#1
regular gas?
I am shopping for a used Disco after being out of the ownership world for a couple years. I previously had an '04 and used nothing but premium gas. I just test drove an '02 SD with 99,000 miles which seemed very mechanically sound and I think I am inclined to make an offer. The current owner has had the vehicle 10 years and states he has only used regular gas. With this being the case, are there specific problems/symptoms due to using the wrong grade gas over that period that I should be on the lookout for?
Thanks!
Thanks!
#2
i wouldnt go near that poop box. after 10 years that has got to be some serious issues. the knock sensor has worked overtime in that truck... newer engines especially those with turbos can compensate for the lower octane, but our old designs don't bode so well with long term low grade gas. i would keep looking.
#4
#5
i wouldnt go near that poop box. after 10 years that has got to be some serious issues. the knock sensor has worked overtime in that truck... newer engines especially those with turbos can compensate for the lower octane, but our old designs don't bode so well with long term low grade gas. i would keep looking.
1st no knock sensors don't "work overtime" and even if they did. That too would not cause excess wear.
2nd these engines are low compression
3rd no the cylinders don't run "extra hot"
That disco would be just as good as any other.
#7
#8
But why would regular run down cylinder walls and not premium? Spay pattern should be the same, only thing I see is the premium being LESS likely to combust, giving it more of a chance to do this.
#9
Sorry but Ihave seen them like that ran "always using premium" I have also seen them clean "always using regular" so it'll take alot more convincing.
But why would regular run down cylinder walls and not premium? Spay pattern should be the same, only thing I see is the premium being LESS likely to combust, giving it more of a chance to do this.
But why would regular run down cylinder walls and not premium? Spay pattern should be the same, only thing I see is the premium being LESS likely to combust, giving it more of a chance to do this.
Exactly! It's still shocking to me how this remains such a prevalent myth in the auto-industry when it comes to older low-compression vehicles.
I had a stock 300hp mustang rated at regular 87 octane gas and have seen that modular V8 CLEAN AS A WHISTLE running that fuel. I've also seen high-end european S50/S52 M3 engines from friends with 200k miles on them that looked just as dirty as the heads pictured above running 93 octane for 17 years.
Honestly it's a little shocking that an ~8:1 CR engine requires premium fuel when my friends 11:1 5.0 'stang without direct injection still runs on 87 and makes 400+ hp stock.
I run my rover on 87 all day long and she's happy (relatively, lol) for a 1.5 decade-old engine with 190k miles on it! FWIW I get worse econ on 93.
#10
Poor concept of octane rating and compression?
1st no knock sensors don't "work overtime" and even if they did. That too would not cause excess wear.
2nd these engines are low compression
3rd no the cylinders don't run "extra hot"
That disco would be just as good as any other.
1st no knock sensors don't "work overtime" and even if they did. That too would not cause excess wear.
2nd these engines are low compression
3rd no the cylinders don't run "extra hot"
That disco would be just as good as any other.