I'm at 86 K and my 1st battery (passenger) does not hold a load. My second battery (driver side) holds a load. Can I get by with just replacing the passenger side battery or do you all suggest both be replaced?

Any opinions of Costco 750 CCA, InterState or any other suggestion

Thanks Max

 

I'd suggest you replace both.
As for the Costco's or InterState, I can't help you. I run Optima's.

 

Was told I should replace both of my batteries at once. You will want to use Optimas
or batteries made to resist vibration of Diesels (they are not the $49.00 ones unfortunately). I got the AC-Delco professional ones. Randy

 

I run the 850 CCA Autozone Gold Tops.

No problems.

Lots of guys run the 850 CCA Wal-Marts too which are made by Johnson Controls.

 

I second the Autozone Duralast Golds, I believe they have an seven or eight year warranty that includes a roadside assistance card if they fail you. I installed two new ones about three months ago and am very pleased so far. Good luck in your decision.

 

As the others have recommended, replace them both for best results.
Another thing that I do, is swap the position on the batteries every six months. The passenger side battery always craps out first. There are several theories about why, but here's my take:

The pass side battery is first to get the huge current demand from the starter. Even though they are wired together in parallel, it is first in line for the huge amp drain. The first in line to the starter does the same thing on the vans and the batteries are in totally different locations. Also, it is last in line to the alternator. Combine the first to get drained and the last in line to get recharged and you get a battery failure. Repeated heavy loads take their toll.

So far,we have been keeping track of the this, and have had positive
results in two '02 trucks and a PS E350. They all are still on the original batteries and both load test good the same.

It is a bit of a pain in the a$$ to swap them back and forth, depending on your air intake set up, but it is proving greatly beneficial.

I upraded my alternator and have a battery maintaining float charger that I use occasionally because of the large amount of current draining things i have added. My truck is not one of the vehicles mentioned above.

I thought I would throw that out there and let you guys know what we've been doing and the great results. Take it for what you will.

Thanks, Austin

 

Thanks, Austin... reps to you for good, well thought out, real life, practical help.

 

There are probably benefits to replacing them both but I don't think they justify the extra expense. Evidently neither does Interstate Battery. I bought two batteries at the suggestion of Interstate but a year later when one failed they said it is not necessary to replace them in pairs. So which is it I asked? He did not have an answer for me.
Anyway I believe you are only saving the expense and inconvinience of breaking down somewhere down the road.

 

thats good enogh reason for me to change both
.
Anyway I believe you are only saving the expense and inconvinience of breaking down somewhere down the road.[/QUOTE]

 

interstate, autozone, ac delco, wal-mart, motorcraft, cosco, diehard, and farm & fleet those are the main ones all made by johnson controls hauled by the trucks i work on, all cases are made in mexico and the only thing they really do here in the states is put acid in them and slap labels on optimas are made by johnson in a different plant napa, carquest, fleet & farm, tractor supply and anything else that says excide on them are made by excide who is owned partly by johnson controls and helped out so they stay in buisness so johnson doesn't completly have the corner on the market