1994.5 - 1997 7.3L Power Stroke Diesel  

Synthetic Oil

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  #16  
Old 09-19-2010, 10:27 PM
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Originally Posted by WALJON
Farm You won,t be disappointed with the synth. in the winter it is like night and day when it comes to starting I ran 0/40 for a couple winters but last winter I decided on 10/30 It is a little better in the cold but not nearly as good as synth. with 10/30 i was finding myself plugging in synth. I never plugged in, This year I am going synthetic again .

Madvan runs synth in the summer he can give you some good info on synth. oil
Just curious, but why did you switch to 10/30? Cost?

I'm also curious to see how the Rotella does in my engine as well. I've never ran it.
 
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Old 09-20-2010, 02:40 AM
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Originally Posted by FARM69
Just curious, but why did you switch to 10/30? Cost?

I'm also curious to see how the Rotella does in my engine as well. I've never ran it.
Yeah cost, I ended up with some free 0/40 when my work moved to our new shop someone left a brand new 5g pails of 0/40 so I used it, last year around this time I spent a pile of money on trade school and went with 10/30 I will be using synthetic this winter.
 
  #18  
Old 09-20-2010, 10:58 PM
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This summer I went to synthetic in everything, axles, tranny, transfer case and engine.

Gained about 1.5 to 2 MPG on my averages.

I keep very accurate records on my trucks on fuel, tires, filters, service schedules and repairs.

4916.1 miles on Rotella 5W-40, not a quart low yet as of my fuel fillup this evening.
 
  #19  
Old 09-21-2010, 12:02 AM
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I run Rotella 10W-30 during the winter months and it seemed to help obviously compared to the 15W-40. Have been considering using the new blend Rotella T5 10W-40 year round, or 5W-40 full synthetic. Just not sure if it'll uncover any leaks... Anyone running Rotella T5 Synthetic/dino blend?
 
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