88 octane vs. 87 octane

[Blue22BigHorn]

Anyone have issues using 88 octane vs 87 octane in their Ram? Seeing different comments about use. TIA

 

[Zoe Saldana]

no

 

[Stavinksi]

No issues. Towing heavy I run 89 otherwise 87

 

[Blue22BigHorn]

Saw 88 at local racetrac and it was cheaper than 87. Almost filled up with it to see but wasn’t sure if it would harm fuel system since it has 5% more ethanol than 87

 

[yakalong]

I thought 88 octane had to much ethanol in it for the Ram. I could be wrong. I have never used it though.

 

[Docwagon1776]

88 octane is 15% ethanol. You're probably ok, but take a look in your manual and see what it has to say about max ethanol content in your fuel.

 

[Fatbob Frank]

I run 88 oct in my wife's Grand Cherokee 4XE cause it's a turbo 4cyl.
In my PW I run 87 NO ETH and occasionally, if towing 91.

 

[392DevilDog]

I have been running Unleaded 88/E15 in my 2015 6.4l and 2015 5.7 RAM 2500 and 2015 Jeep Cherokee 3.2l for many years now.

The 6.4l has had it exclusively for the last 3 years and about 75k miles. I think one time I couldn't get it and one fill up of 90 non ethanol for a dismal test.

Minimum of 87 octane and maximum of 15% ethanol is what the manual says.

It is safe to use in all vehicles from 2003 according to the tag on the pump. Since my 99 V10 is the same engine as used in 03, if i am going to use the amount of 88 pumped I will use it in it too. But, it doesn't get drove much, so it usually sits with 90 non ethanol in the tank.

I have found the 88 gets better mileage and performance than 87. I rarely use 89, since all 3 of my vehicles call for 87, but I have noticed no difference from 89 and 88 when I have.

The real deal is that here in Central PA it is 30 cents cheaper than 87, and 50 to 70 cents cheaper than 89. And Sheetz runs it at 2.99 often and sometimes 1.99 for promotion...so, regardless...I use a lot of gas and saved a ton of money.

176k on the 6.4l 135k on the 5.7l and 78k on the Jeep.