Bad new batteries?

[Jayson41]

Ever since the cold came around my truck has turned over slow in the morning. I live in Southern California so we are talking high 20's which i know is not cold compared to some of you but for me it sucks. Anyhow, i thought maybe my batteries were going bad since after sitting for a few hours it would crank slow. I bought two new yellow top Optima batteries and put them in. Well the issue is still there, after i have run the truck for a while it starts strong and fast. After sitting a few hours, (8-10 hours) it turns slower. I have already been though one FICM and dont want to replace another one. Any ideas or test's to run for draw while the truck is not running? Thanks.

[jeeplj8]

2 thoughts:
First, I am not a fan of Optima batteries. They make a good product, but they are overpriced. However, that aside, most places that stock them, don't sell a lot. What was the date code they were manufactured. You may not have put "new" batteries in your truck at all.

Second: what weight oil (and type) are you running? Heavier weight oils are molasses under about 3o degrees and you need thin oil running through the injectors for a good start.

[mustangman02232]

Originally Posted by Jayson41

Ever since the cold came around my truck has turned over slow in the morning. I live in Southern California so we are talking high 20's which i know is not cold compared to some of you but for me it sucks. Anyhow, i thought maybe my batteries were going bad since after sitting for a few hours it would crank slow. I bought two new yellow top Optima batteries and put them in. Well the issue is still there, after i have run the truck for a while it starts strong and fast. After sitting a few hours, (8-10 hours) it turns slower. I have already been though one FICM and dont want to replace another one. Any ideas or test's to run for draw while the truck is not running? Thanks.

theres your problem, throw those things in the scrap pile and get two new interstates or motorcraft batteries

(i went through 2 optimas in my 88 toyota pick up within 8 months and 1 in my 92 camaro within a year, i will never buy another one)

[Dietoremain]

i have red tops, no problemo here with em. good stuff. i'd run a 5w40 oil for sure man.