Did an oil change on my 98 ram 2500 5.9 and before the oil change it never smoked. Now afyer oil change it smokes for like the first 7mins of running and the eventually stops. Doesn't do this all the time. Any thoughts?

 

PCV valve, or valve seals. How many miles on it?

 

And did you use a different oil brand/weight this time?

 

Does the brand make that much of a difference?

 

It could. It's all about the quality of the brand.

I've had engines that could smoke a beehive, put in a better oil (Rotella in this case, that's what sold me on Rotella), and they quit smoking.

What brand and weight of oil did you put in it?
Is the PCV valve in good shape?
How many miles on the engine?
What is the color of the smoke? I assume it is blue?
Does the engine use any oil, even if it isn't smoking?

Edit: Also, have you checked your crankcase breather filter? A plugged filter will cause your engine to burn oil. It will be on the valve cover that doesn't have the PCV valve.

 

I used valvoline 10w-40 the po just told me he used mobile 1 10w-40 high mileage in it when he had it. Truck has 133xxx miles on it

 

You guys think I should change it again with the mobile 1 or go with soomething else

 

Ive also herd these motors are notorious for intake manifold valley gaskets going bad could that be one of the causes?

 

I think you should first check the following three things:

1. Check your PCV valve.
2. Check your crankcase breather filter.
3. Take a magnet and stick it through your throttle body onto the plenum pan. Does it attract the magnet?

 

PCV valve is good checked that the other day. The breather filler os the one on the other valve cover right? If so I will check that when I get home and get back to you. Amd when I do the magnet thing should it attract it or no? Thanks a lot really appreciate the help.