lucas - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > Grand Cherokee General Discussion > lucas

FS: 2007-2013 Jeep Wrangler "HALO" Angel Eye KitThe ALL NEW Factor 55 ProLink Winch Shackle Mounts availabFS: Wranger BRIGHT License Plate LED! Just $3! Great value

Reply
Unread 01-27-2013, 09:36 PM   #1
davidtownsend
Registered User
1994 ZJ 
 
Join Date: Jul 2012
Location: Elkton, Maryland
Posts: 572
lucas

I use Lucas almost every fill up. I was wondering if i'm wasting my money or if it is helping my jeep. Should I seafoam my jeep then continue using lucas? I has never sea foamed it and i'm pretty sure the po didn't either. Any suggestions on this product. Is there a better product to use to keep it cleaner?

Also does anyone know if valero gas is bad quality gas?

__________________
My build thread! It'll get better when my life starts to take off.
http://www.jeepforum.com/forum/f197/young-5-2-build-thread-1481680/
davidtownsend is offline   Reply With Quote
Unread 01-27-2013, 09:38 PM   #2
ZeeJay1997
Registered User
1997 ZJ 
 
Join Date: Dec 2008
Location: Sweet Home, Alabama
Posts: 6,231
I run Lucas every 3-4 tanks. Cant tell a lot of difference in the way it runs, just to keep injectors clean.
ZeeJay1997 is online now   Reply With Quote
Unread 01-27-2013, 09:42 PM   #3
davidtownsend
Registered User
1994 ZJ 
 
Join Date: Jul 2012
Location: Elkton, Maryland
Posts: 572
That is why I do it. And it says it lubricates the upper engine.
__________________
My build thread! It'll get better when my life starts to take off.
http://www.jeepforum.com/forum/f197/young-5-2-build-thread-1481680/
davidtownsend is offline   Reply With Quote
Unread 01-27-2013, 09:45 PM   #4
Rich93ZJ
Registered User
1993 ZJ 
 
Join Date: Sep 2012
Location: Richland, Ga
Posts: 452
I have some ocean front property in Kansas if your interested.....
Rich93ZJ is offline   Reply With Quote
Unread 01-27-2013, 09:46 PM   #5
ZeeJay1997
Registered User
1997 ZJ 
 
Join Date: Dec 2008
Location: Sweet Home, Alabama
Posts: 6,231
There's always a marked improvement in idle if I use it when I have forgotten to put in for a couple of months.
ZeeJay1997 is online now   Reply With Quote
Unread 01-27-2013, 10:08 PM   #6
Uniblurb
Web Wheeler
 
Uniblurb's Avatar
1996 ZJ 
 
Join Date: Jan 2012
Location: Central, Ohio
Posts: 3,268
I use Lucas about once every 1-2 months and bought the quart bottle last time at the parts store since on sale. Have some Seafoam which has been sitting down the basement for 6 months and don't know if I'll ever end up using it.
__________________
96 4.0 ZJ Laredo, 2004 4.7L WJ Limited, 93 4.0 XJ (spare), 96 4.0 XJ (son's)

-Stalling ZJ? 12 things to check before replacing a sensor; the Dirty Dozen
-Crankshaft position sensor multimeter test. & video of testing.
Uniblurb is offline   Reply With Quote
Unread 01-27-2013, 10:12 PM   #7
Carlos14
Afraid of the Dark
 
Carlos14's Avatar
1990 YJ Wrangler 
 
Join Date: Apr 2012
Location: Graham, NC
Posts: 4,147
I use Lucas between seafoam applications on my YJ and before on my XJ. I have always been a fan of Lucas. I say seafoam every 6-8 months, and run some Lucas in your gas every month. I have even been known to use some Marvels Mystery oil in the oil and gas as well on occasion.
__________________
Teenager With A Dream Build

Quote:
Originally Posted by Anticanman View Post
I think you're skewing the facts. Clarity is relative. Our job is to lead people to the kingdom of heaven, not make them think they're looking at it. :D
Poison Spyder Hood Louver Install
Carlos14 is offline   Reply With Quote
Unread 01-28-2013, 04:59 AM   #8
davidtownsend
Registered User
1994 ZJ 
 
Join Date: Jul 2012
Location: Elkton, Maryland
Posts: 572
That's what i'll start doing from now on. My jeep gets average 12 mpg and I have a 2" bb and 31" tires. Is that about right?
__________________
My build thread! It'll get better when my life starts to take off.
http://www.jeepforum.com/forum/f197/young-5-2-build-thread-1481680/
davidtownsend is offline   Reply With Quote
Unread 01-28-2013, 07:43 AM   #9
exador
Registered User
1970 CJ5 
 
Join Date: Jan 2013
Location: Ada, Oklahoma
Posts: 66
Quote:
Originally Posted by davidtownsend View Post
That's what i'll start doing from now on. My jeep gets average 12 mpg and I have a 2" bb and 31" tires. Is that about right?
Sounds about right, i get about 12-15 in town with stock 5.2L with 235/75/15.
The stop and go kills the mileage but i get much better on highway, last week I took a trip totalling 350+ miles and overhead showed I averaged 20 on the way there and 18.2 on the way back(I was in a hurry to get home).

Also the bigger the tires you have the worse mileage your overhead will show unless you change the gear thing to accomodate. It calculates the amount of fuel you use and the distance you travel, so if you just change to bigger tires you are going farther then your odometer will read while using the same amount of fuel. You also go faster then what spedo shows.
So with that in mind you can't even set the trip and check when filling up becuase it will be wrong.
exador is offline   Reply With Quote
Unread 01-28-2013, 07:46 AM   #10
misfit77
Registered User
1996 ZJ 
 
Join Date: Sep 2012
Location: tucson, az
Posts: 589
wouldn't it be cheaper to buy new or rebuilt injectors?
misfit77 is offline   Reply With Quote
Unread 01-28-2013, 07:50 AM   #11
riot1987
Registered User
1997 ZJ 
 
Join Date: Jun 2012
Location: In your attic, with the squirrels and wrapping paper
Posts: 3,535
Have you guys heard of that Zmax stuff? My old man swears by it. Ive used Lucas before but never felt a huge improvement. It makes sense to run it every month or so. If you want better fuel, id buy Shell. Ive heard a lot of people say their trucks run better with shell.
__________________
http://www.jeepforum.com/forum/f22/riots-97-grand-1436100/

Build thread^^
riot1987 is offline   Reply With Quote
Unread 01-28-2013, 08:49 AM   #12
davidtownsend
Registered User
1994 ZJ 
 
Join Date: Jul 2012
Location: Elkton, Maryland
Posts: 572
Quote:
Originally Posted by exador View Post

Sounds about right, i get about 12-15 in town with stock 5.2L with 235/75/15.
The stop and go kills the mileage but i get much better on highway, last week I took a trip totalling 350+ miles and overhead showed I averaged 20 on the way there and 18.2 on the way back(I was in a hurry to get home).

Also the bigger the tires you have the worse mileage your overhead will show unless you change the gear thing to accomodate. It calculates the amount of fuel you use and the distance you travel, so if you just change to bigger tires you are going farther then your odometer will read while using the same amount of fuel. You also go faster then what spedo shows.
So with that in mind you can't even set the trip and check when filling up becuase it will be wrong.
Were would I get the part to change the spedo?
__________________
My build thread! It'll get better when my life starts to take off.
http://www.jeepforum.com/forum/f197/young-5-2-build-thread-1481680/
davidtownsend is offline   Reply With Quote
Unread 01-28-2013, 10:40 AM   #13
exador
Registered User
1970 CJ5 
 
Join Date: Jan 2013
Location: Ada, Oklahoma
Posts: 66
Quote:
Originally Posted by jeepejeep View Post
Here's a chart that will allow you to get the proper speedometer gear from Jeep if you have the older gear driven speedometer. I used it for my '93 ZJ and it made the speedo very accurate.


R&P/Tire: 33" 32" 31" 30" 29" 28"
3:07 SG26 SG27 SG27 SG28 SG28 SG29
3:55 SG31 SG31 SG32 SG33 SG33 SG34
3:73 SG32 SG32 SG33 SG34 SG34 SG35
4:10 SG34 SG35 SG36 SG37 SG38 SG39
4:56 SG36 SG37 SG37 SG38 N/A N/A
According to this chart and your info showing 31" tires you should need SG33 if you have stock 3:73 gears.

This link has the same information with MOPAR part numbers, you should be able to find somewhere to buy one online with a bit of searching. The dealership can order you one but i am not sure how much they would ask for it. It is a fairly simple swap and you can find plenty of writeups on jeepforums.
http://www.nagca.com/grandtech/speedometerregearing.htm

EDIT: also some people claim problems with it not shifting right since the spedo is off.
exador is offline   Reply With Quote
Unread 01-28-2013, 10:45 AM   #14
exador
Registered User
1970 CJ5 
 
Join Date: Jan 2013
Location: Ada, Oklahoma
Posts: 66
Quote:
Originally Posted by misfit77 View Post
wouldn't it be cheaper to buy new or rebuilt injectors?
there is an injector upgrade but it is not cheap to buy them new!
if you can find some out of a junk yard you would be better off, the zj stock injectors are crap. there is a list of compatable injectors, you can buy new but i priced it around $500-$1000 online. Some claim $20 a piece from junk yard(need one for each cylinder).

check out the link for the write up. I have yet to do this but plan on it.
http://www.jeepforum.com/forum/f13/d...p-how-1305456/
exador is offline   Reply With Quote
Unread 01-28-2013, 11:39 AM   #15
Uniblurb
Web Wheeler
 
Uniblurb's Avatar
1996 ZJ 
 
Join Date: Jan 2012
Location: Central, Ohio
Posts: 3,268
Quote:
Originally Posted by exador View Post
there is an injector upgrade but it is not cheap to buy them new!
if you can find some out of a junk yard you would be better off, the zj stock injectors are crap. there is a list of compatable injectors, you can buy new but i priced it around $500-$1000 online. Some claim $20 a piece from junk yard(need one for each cylinder).

check out the link for the write up. I have yet to do this but plan on it.
http://www.jeepforum.com/forum/f13/d...p-how-1305456/
Believe the online prices you're quoting for the new 703 injectors are waay too high. I bought a set of 6 new 703's for $24.95/each with free shipping on ebay and it's a reputable seller. So it's around $150 for a 4.0 and $200 for a V8.

http://www.ebay.com/itm/JEEP-Upgrade...b4fe8c&vxp=mtr

I would have liked to have done the diy jy swap out ones and if I had a V8 probably would have. The jy is far away but used injectors are $8 from the pick-n-pull where I've seen others buying them for $6. Believe the injector rebuild kit w/screens and new o-rings is less than $20.

Haven't really noticed any improvement in mpg with 703's and if anything may have lost 1-2mpg. Believe this may be because they're injecting a little more fuel since my last ones may have been clogged or leaking. Have noticed a slight improvement in accelerating where my 4.0 doesn't bog down as bad as it used to. I'm sure my fairly new Bosch fuel pump assembly helps with this too.
__________________
96 4.0 ZJ Laredo, 2004 4.7L WJ Limited, 93 4.0 XJ (spare), 96 4.0 XJ (son's)

-Stalling ZJ? 12 things to check before replacing a sensor; the Dirty Dozen
-Crankshaft position sensor multimeter test. & video of testing.
Uniblurb is offline   Reply With Quote




Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.