Romping and stall on cold start

[Strokin96!]

Hey all. This is my first post on here so I hope yall can help me out. I have had some trouble with my 96 PSD starting lately. It romps on cold starts and stalls then is fine all day. I just replaced fuel filter, glow plugs (to replace the $hit Auotlite ones the kid put in before he sold it), all 4 UVCH, and valve cover gaskets. It hasn't been real cold to test if the romping is gone but it lugs on all starts still. It turns over quick then catches and kinda Lug, Lug, Lugs for 5 seconds or so then runs like a bear after. What needs to be changed next? I gotta get this figured out before the real cold gets here. Thanks, Jeff

[BigFuel]

What are the temps out in the morning? Are you using the block heater? Are you using a fuel additive in the fuel for the cold?

[444 ci]

change your oil my truck did the same thing until i changed the oil to 5 w 40 synthetic no more romps.

[Strokin96!]

Its low 20's when it does this. If i use the block heater it starts fine. I use power service winter blend for a fuel additive when its cold. That's what i have heard. Its been nearly 6000 since the last change so that's next. What brand do you recommended?

[BigFuel]

I use 5w-40 Valvoline Synthetic. 6000 miles is a bit high. You start loosing anti-foaming agents near 4000 miles.

[Strokin96!]

I know 6000 is way too high for me but im so backed up with college and so broke it fell to the wayside. So your saying i should switch to synthetic?

[BigFuel]

I don't experience "cold" like most guys on here. A lot of guys say the synthetic keeps the engine running smoother in the cold. I don't have first hand in that. Cold to me is below 70*

[Strokin96!]

Ok ill look into that now. Ya we get down to -15° or so on a bad day so its gonna be a rough winter if i don't figure this out. Thanks for the help.

[Strokin96!]

Thanks for your input. I switched to Rotella T6 synthetic 5w-40. Truck starts and runs like a bear. Even this morning when it was frozen in snow at 22°. Thanks a lot!