15w40 amsoil

 

15w40 Rotella for the past 140k, never had any issues.

 

I've been run rotella 15w40, but just worried about hard starts again this winter when left unplugged for a long time.

 

I am in desperate need of glow plugs. An hour plugged in and fires right up if it has been sitting. Never had any trouble cranking with Rotella even on the coldest days. Even when I get around to putting glow plugs I will still plug it in.

 

I am in desperate need of glow plugs. An hour plugged in and fires right up if it has been sitting. Never had any trouble cranking with Rotella even on the coldest days. Even when I get around to putting glow plugs I will still plug it in.

how many miles you have on your 7.3? That only problem I had starting my truck was when it sat this winter for 7 hours when it was -11 with the wind. The other times wasnt to bad off starts.

 

How hard of a start

 

I started to run 5w40 all the time and since then I have never had to plug it in again! Before then if it wasn't plugged in the truck wouldn't want to start once the temps started dipping below 32.

 

How hard of a start

Well it was -11 wind the wind last winter, my truck sat for 7 hours. I did find out a month go i had a bad glow plug relay, so that may have had something to do with it. But it was a really hard start probably took a good 10 mins, to finally get her to turn over, but like I said it was negative 11 with the wind.

My truck has 191500 on her now so may its time to change the glow plugs.

The only time my truck is not plugged in is either when I go to school or not at my house.

 

That wind is really bad for diesels.

 

how many miles you have on your 7.3? That only problem I had starting my truck was when it sat this winter for 7 hours when it was -11 with the wind. The other times wasnt to bad off starts.

198k, 2002 F350 cclb. Started out as my tow rig for snowmobile trips. Turned it into a plow truck 6 years ago. Rust is my biggest enemy, slow taking the old girl away from me.

 

That wind is really bad for diesels.

Why you say that?

 

198k, 2002 F350 cclb. Started out as my tow rig for snowmobile trips. Turned it into a plow truck 6 years ago. Rust is my biggest enemy, slow taking the old girl away from me.

Some sandblasting and some por 15 with be your bestfriend trust me. I did it to my doors and oil pan, 99% is rust free now expect for the couple areas i couldnt clean very well.

 

I have a 99 F350 7.3 and always ran 15w40 never had problems starting during the deep cold spell we had last winter The only problem I had was one night it wanted to gel up Thinking its hitting 100k Its not a every day truck but during winter time its a plow truck summer time its a towing truck big loads or haul cattle

 

What weight of oil you run during the winter and summer-- 15w40, 5w40, or 5w40 full syn?

I run 15w40 right now, thinking about switching over to 5w40 syn. What are your thoughts on this? I have a 01 7.3, she leaks a very small amount out of the ebpv. I'm worried shes going to get more leaks with the syn.

15/40 MOTORCRAFT/valvo SYNTHETIC..they love it

 

15/40 MOTORCRAFT/valvo SYNTHETIC..they love it

Would the synthetic make the 15w40 easier to start?

 

That wind is really bad for diesels.

Hahaha.... We shouldn't have Diesels in the windy city.....

Adam, the wind doesn't have a chill effect on Equipment

 

Would the synthetic make the 15w40 easier to start?

not at all . plug that beach in . i really think it depends on the type tunes n stix ur runnin too

 

not at all . plug that beach in . i really think it depends on the type tunes n stix ur runnin too

My truck loves the block heater lol

 

15-40 valvoline all fleet. starts rite up even at 10 below , and i only plug in if i know i will be going out plowing.
do not use synthetic if you have any kind of leak, it will find the leak and make it worse.

 

2000 f250 7.3 with 239,xxx miles always ran 15w40 with no complaints. Since i did my glow plugs last summer she has started much better in the bitter cold. Truck runs great id drive it cross country tomorrow. its the rust that is going to get the best of it, or maybe it already has.

 

I switched to 5w40 once the temps started to get to 32 at night. Way easier to crank over. I ended up just running it year round it seemed to run quieter. I only plugged mine in when the actual temp was below zero. If I was plowing I would plug it in the night before either way. The wind has no effect on anything except your skin

 

My truck loves the block heater lol

i have a few 6.0's that are on steroids (tuned,modded) you gotta hear them cold starts. sounds like a high lobed cam alcohol funny car .....in 55 degree and below . but they fire right up plugged in . new fresh batteries every 2 years is a must . if not we found that it blows the FICM's. they need atleast 48volts daily .

 

Why you say that?

Do a search.

Wind chill has nothing to do with anything other than people.

 

We run 15W-40 in summer and 10W-30 in Winter. Seem to start easier with the lighter oil in winter.

 

If you look in the owners manual, it actually recommends using 10-30 in the winter. Rather below a certain temperature.

If I had remembered the last time I changed my oil, id have switched to 5w-40 Rotella Synthetic.