Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 10-23-2011, 04:06 PM
05quadratrac's Avatar
Member
 
Join Date: Jun 2009
Location: PA
Posts: 657
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 2521
05quadratrac is on a distinguished road
05' 4.7 WK oil

OK i'm sure its been asked a million times but when I checked out Wkjeeps.com they said 5w20 oil so I go and buy it, as I open my hood the cap says 5w30. is the 20 good? I used it anyway, can't afford to be buying more Mobile 1 right now haha.
__________________

__________________
2005 WK Laredo 4.7 28x.
PAID OFF. :D
Installed: K&N Intake, Magnaflow 18", 245/65/17 Bridgestone Dueler A/T's, Shorty Antenna.
Coming soon: 180 degree thermostat, superchip
Future mods: SRT8 wheels, MyGIG or REC, HID's, Painted door trim and door handles.
Reply With Quote
  #2  
Old 10-23-2011, 04:10 PM
Scottina06's Avatar
JeepGarage Founder
My Jeep: 2014 6.4L SRT8 WK2
 
Join Date: May 2009
Location: Berea, Kentucky
Posts: 48,753
Thanks: 827
Thanked 806 Times in 622 Posts
Rep Power: 7717320
Scottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond repute
Garage
Re: 05' 4.7 WK oil

I would think it would be fine until you can change it.
__________________

__________________
SCOTT
The HARDER you work...the LUCKIER you are!
2014 REDLINE red Jeep SRT "BLOODIED Edition" 1 of 1
Previous JEEP rides-
2013 Jeep Grand Cherokee SRT-deep cherry
2013 JKU 10th anniversary-white
2006 Jeep Grand Cherokee Laredo-inferno red



Twitter-The_Jeep_Guy
Instagram-thejeep_guy

Reply With Quote
  #3  
Old 10-23-2011, 04:12 PM
2005JGC's Avatar
Senior Member


My Jeep: 2005 4.7L WK
 
Join Date: Nov 2010
Location: Portland, OR
Posts: 2,751
Thanks: 51
Thanked 69 Times in 58 Posts
Rep Power: 1652903
2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute
Re: 05' 4.7 WK oil

nope, 5w30 is suggested for the early 4.7 design (used till approx 2008) the later design (with 16 spark plugs) uses 5w20
__________________
2005 Jeep Grand Cherokee - Gone but not forgotten!

Reply With Quote
  #4  
Old 10-23-2011, 04:22 PM
Scottina06's Avatar
JeepGarage Founder
My Jeep: 2014 6.4L SRT8 WK2
 
Join Date: May 2009
Location: Berea, Kentucky
Posts: 48,753
Thanks: 827
Thanked 806 Times in 622 Posts
Rep Power: 7717320
Scottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond repute
Garage
Re: 05' 4.7 WK oil

yep...Ive used 5w30 ext perform M1 from day 1
__________________
SCOTT
The HARDER you work...the LUCKIER you are!
2014 REDLINE red Jeep SRT "BLOODIED Edition" 1 of 1
Previous JEEP rides-
2013 Jeep Grand Cherokee SRT-deep cherry
2013 JKU 10th anniversary-white
2006 Jeep Grand Cherokee Laredo-inferno red



Twitter-The_Jeep_Guy
Instagram-thejeep_guy

Reply With Quote
  #5  
Old 10-23-2011, 11:15 PM
05quadratrac's Avatar
Member
 
Join Date: Jun 2009
Location: PA
Posts: 657
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 2521
05quadratrac is on a distinguished road
Re: 05' 4.7 WK oil

Thanks for the replies. I rechecked WKJeeps.com and they have 05-10 with 5w20 listed for all those years which got me. I should have just checked under the hood but I've always assumed that site was pretty accurate. Oh well I don't think it should make much difference, I guess i'll find out haha.
__________________
2005 WK Laredo 4.7 28x.
PAID OFF. :D
Installed: K&N Intake, Magnaflow 18", 245/65/17 Bridgestone Dueler A/T's, Shorty Antenna.
Coming soon: 180 degree thermostat, superchip
Future mods: SRT8 wheels, MyGIG or REC, HID's, Painted door trim and door handles.
Reply With Quote
  #6  
Old 10-24-2011, 01:13 PM
Member
My Jeep: 2007 4.7L WK
 
Join Date: Jul 2011
Location: Blue Springs, MO
Posts: 114
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1204
bradley4kc is on a distinguished road
Re: 05' 4.7 WK oil

I always put 5W-30 in our '06 4.7 WK - never had any problems. Our '07 4.7 WK says 5W-20 on the filler cap. I did some research and found out that the 20 weight was used by the manufacturer to get better fuel economy when they ran their tests for fuel economy amongst there entire fleet of vehicles. I read that the average driver will not see a noticeable difference in fuel econ but when the manufacturer is looking at fuel econ regs for the entirety of there production line any small improvement helps their bottom line. In the end, either should be fine without doing any damage - but I would go with whatever it says under the hood.
__________________
2007 WK Rocky Mountain Edition Laredo
Red Rock Crystal Pearl Coat
4.7 flexfuel V8, QTII, SuperChip 3875, OME HD, OME strut/shocks f/r, Spidertrax 1.5" spacers f/r, '06 Limited chrome grill (currently swapped with "Murdered" expanded metal grill), rear hitch mod, 265/70/17 Nitto Terra Grappler spare, Smittybilt rear hitch shackle,
Ronin II wheels w/ GY Wrangler Authority 265/70/R17's
2011 KK Limited 3.7L V6
everything brand new stock
Reply With Quote
  #7  
Old 10-24-2011, 01:45 PM
Long Live the Graphite Ghost

 
Join Date: May 2009
Posts: 13,395
Thanks: 55
Thanked 131 Times in 113 Posts
Rep Power: 542543
robpp has disabled reputation
Re: 05' 4.7 WK oil

Quote:
Originally Posted by 2005JGC View Post
nope, 5w30 is suggested for the early 4.7 design (used till approx 2008) the later design (with 16 spark plugs) uses 5w20
my 2007 4.7 has the 5-20 right on the oil cap.......and i have ONLY 8 plugs (early motor)


it was changed on the 4.7 for CAFE FUEL STANDARDS....nothing changed......the hemi for the MDS.
__________________
Reply With Quote
  #8  
Old 10-24-2011, 06:00 PM
2005JGC's Avatar
Senior Member


My Jeep: 2005 4.7L WK
 
Join Date: Nov 2010
Location: Portland, OR
Posts: 2,751
Thanks: 51
Thanked 69 Times in 58 Posts
Rep Power: 1652903
2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute
Re: 05' 4.7 WK oil

Good to know, thanks Rob!
__________________
2005 Jeep Grand Cherokee - Gone but not forgotten!

Reply With Quote
  #9  
Old 10-25-2011, 02:00 AM
05quadratrac's Avatar
Member
 
Join Date: Jun 2009
Location: PA
Posts: 657
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 2521
05quadratrac is on a distinguished road
Re: 05' 4.7 WK oil

Thanks guys, I appreciate the replies, if the 07's have it on the cap it should run just fine in my 05 4.7. I really didnt feel like draining it and buying another 6 quarts, that mobile 1 gets kind of pricey on my budget.
__________________

__________________
2005 WK Laredo 4.7 28x.
PAID OFF. :D
Installed: K&N Intake, Magnaflow 18", 245/65/17 Bridgestone Dueler A/T's, Shorty Antenna.
Coming soon: 180 degree thermostat, superchip
Future mods: SRT8 wheels, MyGIG or REC, HID's, Painted door trim and door handles.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
05' WK and U connect w/droid x Jeep Hemi Grand Cherokee - WK 1 02-18-2011 09:04 AM
05' WK Debadge About Time... Chaoul1 Visual Modifications 12 12-25-2010 05:23 PM
anyone know part# for MyGig for 05' WK kycoolcat Audio, Video, Navigation & Electronic Modifications 8 05-24-2010 08:59 PM
05' WK Tinted Chaoul1 Visual Modifications 9 04-25-2010 04:55 PM
05' wk tranny issue Allaboutjeeps14 Troubleshooting/Problems Discussion 3 10-19-2009 04:44 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 11:15 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community