Being new to the Diesel I may ask some foolish questions. However, one must learn.

I pulled my dip-stick and noticed my oil is extremely black and has a very slight smoky smell. I am 1800 miles into my last oil change and my truck has 9800 miles on it.

Question:

1. I that normal?
2. Would the good bypass oil filter such as FS2500 be a good idea and worth the $$$

Thanks,

 

Normal. Diesel soot makes its black. Regular oil changes keeps it from being a problem. Use an oil rated for diesel engines.

 

Black oil is normal. A good bypass filter is always good for the engine, but there have been a lot of trucks that have run 300K + miles with just regular maintenance.. So, yes it's beneficial, but you may never see the benefits unless you plan on keeping the truck for a LONG time...

 

your oil will be black almost as soon as you put it in after an oil change from the soot