5w40 synthetic oil

[wb4ctw]

Anyone running 5w40 synthetic oil in a first gen instead of 15w40 regular oil?

 

[Cooker]

Welcome to the TDR.



I do not have a 1st gen but I could help answer some questions about 5w40 oils.



What is your reason for switching? Longer drain intervals, better cold starts, ect... ?

 

[Blue Ox1]

I run the rotella syntec 5w-40 starts a lot easier in the winter

Joe

 

[DanaLittle]

I run Amsoil synthetic and donaldson oil filter

 

[wb4ctw]

Welcome to the TDR.



I do not have a 1st gen but I could help answer some questions about 5w40 oils.



What is your reason for switching? Longer drain intervals, better cold starts, ect... ?

I work rotating shift at work. In the winter I do not have outlet available for block heater in morning when I leave a 7 am to drive home. Most trips are 8 miles each

way or about 15 miles each way when pulling 3000 lb boat in summer to launch site.

Truck has 81000 miles on it.

I use synthetic in two minivans and change at about 5000 miles even though car manual says 7500 for change. Minivans used at interstate speeds for long trips.

I am concerned about short trips on the diesel, so thought synthetic would be better.

Any comments would be appreciated.

Thanks.

 

[Cooker]

You sound like a perfect candiate for a 5w40 synthetic.

 

[Mel Fuelling]

I ran Rotella 5w40 synthetic last winter when it was cold, then switched back to regular Rotella 15w40. It seemed to start easier.

Mel

 

[ARhine]

I ran it last winter as well. Bigest test for my rig was setting in the parking lot all day. Never got over 5deg F all day, was 3 deg when I went to start it. Had to hold the throttle 1/4 of the way but it fired after 3 seconds or so of cranking and slowly chugged to life. 1-2 seconds more and I don't think the battery would have done it.