Last post on Apr 07, 2012 at 2:16 AM
You are in the Dodge/Plymouth Neon
What is this discussion about?
Plymouth Neon, Dodge Neon, Fuel System, Fuel Efficiency (MPG), Coupe, Sedan
#8 of 12 Re: Getting good mileage [oldgunrunner]
Dec 05, 2008 (10:40 pm)
YES I AGREE STONGLY ON THE OIL ESPECIALLY, NEVER CHANGE THE WEIGHT ON THE FRONT OF THE RECOMMENDED OIL LIKE 5W20 YOU CAN GO 5W10, 30, 40 ETC, BUT WHEN YOU CHANGE THE FIRST WEIGHT THE 5 RTO 10, 15, OR 20 YOU TAKE THE CHANCE OF DAMAGEING YOUR ENGINE, THE FIRST PART THE 5 IS THE WEIGHT DESIGNED FOR YOUR OIL PORTS THAT LEAD TO YOUR HEAD, ENGINE ETC YOU ENCREASE IT AND THE OIL WONT FLOW THROUGH THE PORTS, TO HEAVY, AND WILL EVENTUALLY CAUSE DAMAGE TO WHAT I THINK IS A VERY GOOD ENGINE, AND AS FAR AS THE HIGH REVS, I ALSO BELIEVE THIS TO BE TRUE, THEY CAN TAKE IT, JUST NOT OVER 7000 RPMS UNLESS YOUR NOT STOCK, TAKE CARE OF THEM AND THEY WILL TAKE CARE OF YOU.
#9 of 12 Re: Getting good mileage [BIGDADDYHORTON]
Apr 06, 2009 (4:52 am)
The weight ratio of oil is actually a thermal rating. It has to do with the flow rate at temperatures. The first weight is what it would flow at when it's warm. The second is what it will flow at when cold. Changing the weight should only be done if you notice a lubrication problem in the car.
#10 of 12 95 Neon Highline Sohc
Nov 28, 2010 (12:54 pm)
i drive a 95 neon highline single overhead cam, manual tranny, its completely stock nothing has been modded yet, since i'm in college and don't have the money for it. it has 146500 miles on it and i get 45mpg on the highway at 75mph almost 50 at 70mph and 28 at 100mph in town i get around 30. i don't know why i get so much better gas millage than you guys. i do change my oil every 5k miles and i use 5w-30 oil.
#11 of 12 Re: 2004 Dodge Neon r/t getting poor mileage [kpelkey]
Apr 07, 2012 (2:02 am)
I have a 2003 Neon R/T with about 130K miles on it. I always use a good synthetic 5w-30 oil and keep the tire pressure up. I typically get mid to high 20's in the city and over 38 on the highway. When I got the car, I didn't like how high the RPM's were on the highway; 3000k at 65mph, so I changed out the trans to one from an SXT. Now my RPM's are at about 2400K at 65mph and my mileage is in the low 40's. With 20% less RPM's, I'm betting that alone added at least 15% to my mileage! My last trip was 42.7 and was all highway. I try to keep my tire pressures at what is on the sidewall rather than what is on the sticker in the door; so much less drag you can actually feel the difference.
#12 of 12 Re: 2004 Dodge Neon r/t getting poor mileage [BIGDADDYHORTON]
Apr 07, 2012 (2:16 am)
So, you put on 1 underdrive pulley and a larger throttle body and went from 121 horse to 243 horse. I want that pulley and TB! LOL!
An underdrive pulley might give you from 4-7 HP increase, but only at the high RPM's. Modernperformance.com sells larger throttle bodies than stock that will give better throttle response because it lets more air in with less pedal travel. So it fools you! But it, too, could give more HP at only the high RPM's if your fuel system can deliver more fuel as well. Let's say maybe 10-12 more HP tops!
I love bench racers!