Jayco RV Owners Forum
 



Reply
 
Thread Tools Display Modes
 
Old 01-10-2018, 12:34 PM   #1
Senior Member
 
JohnWedell's Avatar
 
Join Date: Sep 2015
Location: Riverhead, NY
Posts: 466
Ram 6.4 Hemi on Reg Gas

Have the truck in my sig. I am running it on mid grade gasoline but wondering if anyone is using regular. Also will be pulling the trailer to Florida.
__________________

__________________
2018 RAM 3500 DRW, 4X4, 4.10, 6.4 Hemi, BAK-MX4 Tonneau Cover, Curt A20 hitch.

2018 North Point 315rlts with all the options.
JohnWedell is offline   Reply With Quote
Old 01-10-2018, 12:50 PM   #2
Senior Member
 
Join Date: Sep 2017
Location: midwest
Posts: 385
what is the recommendation? My 6.2 recommends premium..... but can run on regular but the mileage goes down and the performance does as well.
__________________

curver900 is offline   Reply With Quote
Old 01-10-2018, 01:06 PM   #3
Senior Member
 
JohnWedell's Avatar
 
Join Date: Sep 2015
Location: Riverhead, NY
Posts: 466
Quote:
Originally Posted by curver900 View Post
what is the recommendation? My 6.2 recommends premium..... but can run on regular but the mileage goes down and the performance does as well.
Regular and recommends mid grade
__________________
2018 RAM 3500 DRW, 4X4, 4.10, 6.4 Hemi, BAK-MX4 Tonneau Cover, Curt A20 hitch.

2018 North Point 315rlts with all the options.
JohnWedell is offline   Reply With Quote
Old 01-10-2018, 02:02 PM   #4
Senior Member
 
Join Date: Sep 2017
Location: midwest
Posts: 385
for towing use the recommended octane.. you can use the lower octane in a pinch, but you shouldn't use it if you can help it...
curver900 is offline   Reply With Quote
Old 01-10-2018, 09:03 PM   #5
Senior Member
 
Join Date: Nov 2013
Location: Swift Current
Posts: 158
I run my 6.4 towing on regular 87 pulled from a crappy gravity feed tank. No issues, no knock. I tried running midgrade for a while and found no evidence of improved mileage or power. If there was, it was unnoticeable. If mid grade or premium was available readily I may use it, but it's not necessary. If it was going to cause damage there would be a disclaimer noting it.

Sent from my SM-G935W8 using Tapatalk
__________________
2015 Ram 2500 Limited 6.4L Hemi, 3.73 LS
2007 Jay Feather 254 EXP "HMCS Anchovy" :Canada:
smurfs_of_war is offline   Reply With Quote
Old 01-11-2018, 06:41 AM   #6
Senior Member
 
Join Date: Oct 2015
Location: Worcester
Posts: 1,254
My 2017 Chevrolet Silverado 5.3 states 'minimum octane of 87 or higher' It goes on to say use 'Top tier' fuels. Top tier being brands that add detergents to meet the 'top tier' spec. Fuel detergents are important to mitigate deposits on injectors in GDI engines.

I never buy fuel from one off gas stations to save a nickel/dime either because I don't know what's in it.


I prefer to use mid grade (89). The truck just seems to run better with it.
__________________
2016 Jay Flight 38FDDS
jloco is offline   Reply With Quote
Old 01-11-2018, 06:48 AM   #7
Member
 
Join Date: Nov 2015
Location: Marietta
Posts: 66
Quote:
Originally Posted by smurfs_of_war View Post
I run my 6.4 towing on regular 87 pulled from a crappy gravity feed tank. No issues, no knock. I tried running midgrade for a while and found no evidence of improved mileage or power. If there was, it was unnoticeable. If mid grade or premium was available readily I may use it, but it's not necessary. If it was going to cause damage there would be a disclaimer noting it.

Sent from my SM-G935W8 using Tapatalk
X2. I've run a few tanks of 89 through and didn't notice a significant enough mpg or performance difference to justify the cost. I've got 25k miles with about 10k towing and am happy to run 87....
__________________
GA Family of 4
2015 Ram 2500 Crew 6.4 4.10 4x4
Eagle TT 284BHBE (Ordered 12/15)

Wannabe is offline   Reply With Quote
Old 01-11-2018, 06:51 AM   #8
Senior Member
 
Join Date: May 2013
Location: SE Wisconsin
Posts: 2,217
Variable grade gas vehicles can and will vary in performance with different grades of gas. They are designed to run at peak performance at the higher recommended grade. I have owned 2 such vehicles over the years, one being my current HHR. I get slightly better mileage with premium gas in the HHR. When gas was $4 a gal and premium was only $.20 more, I saved about $100 a year running premium. No brainer. At $.40 more per gal and $2.45 for reg, it's not worth it.

For your truck, it's designed to run at it's best performance with mid-grade. If it was mine, I'd run mid-grade for towing and regular for daily driving.
__________________
Chuck
2013 Jayco Jayfeather X20 E, 2008 GMC Sierra 1500 Crew Cab Z71 SLE
DocBrown is offline   Reply With Quote
Old 01-12-2018, 05:35 PM   #9
wwt
Senior Member
 
Join Date: Jun 2014
Location: Northern Indiana
Posts: 100
I've been using mid grade during summer towing season and 87 during winter.
If you need max pulling power use 89. If you use 87 and the engine controller senses knocking it will retard the ignition timing which will reduce power. But ,as others have said, the power difference is hardly noticeable.
__________________
2016 Jay Flight 24RBS
2016 Ram 2500 CC 4x4 6.4l HEMI
Sold :( 2006 Ram 3500 SRW, QC, 4x4, Inline 6.
wwt is offline   Reply With Quote
Old 01-14-2018, 03:05 PM   #10
Member
 
Mad Cow's Avatar
 
Join Date: Jan 2018
Location: Iowa
Posts: 80
Quote:
Originally Posted by jloco View Post
My 2017 Chevrolet Silverado 5.3 states 'minimum octane of 87 or higher' It goes on to say use 'Top tier' fuels. Top tier being brands that add detergents to meet the 'top tier' spec. Fuel detergents are important to mitigate deposits on injectors in GDI engines.

I never buy fuel from one off gas stations to save a nickel/dime either because I don't know what's in it.


I prefer to use mid grade (89). The truck just seems to run better with it.
The gas at a name brand is the same gas at a mom and pop. It all comes from the same local fuel terminals. And that terminal fuel comes from a variety of refineries, not all the same brand. Now, different stations will have different additives fed into the stream when a tanker is loaded, but the gasoline is the same stuff. In my over 5 million miles as a commercial driver, that included some time tanking fuel. Even premium is just the same regular gasoline, but with octane boosters added when the tanker fills up at the terminal.

I am cheap. I have no problem getting fuel at a high volume no-name place to save a few cents a gallon. The key being.... high volume. High volume fuel outlets will have lower risk of fuel contamination.
__________________

Mad Cow is offline   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


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Jayco, Inc. or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 02:28 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.