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Welcome! I hope you are enjoying your truck.
 

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Discussion Starter #5
Fixed stalling problem. Changed oil because oil was foamy. I spoke to power stroke genius. Said for older 7.3 need defoamer in oil. Changed oil with Napa universal fleet plus 15w40. All better
 

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Fixed stalling problem. Changed oil because oil was foamy. I spoke to power stroke genius. Said for older 7.3 need defoamer in oil. Changed oil with Napa universal fleet plus 15w40. All better
Congrats on your new daily driver. I hope its the 4R100 with that FL traffic!

Always a good practice to change oil whenever getting a used vehicle with unknown oil history, especially with a diesel. The good news is every Diesel rated oil will have a strong defoaming agent in the formula. That doesn’t mean some HDEO brands won’t foam more than others though.

Here are specs on your product:

http://pqiadata.org/NAPA_15W40.html

EDIT:
And FWIW, our 7.3’s don’t like oil additive products.
 
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