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- Sep 26, 2010
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Originally Posted By: Panzerman
I would never run 5w20 with towing. My wife just took our Ford (FX2) with the 5.4 to Pennsylvania with a 14' trailer. Running Mobil 0w40. Truck runs much quieter than with 5w20. Gas mileage was excellent. Around 16 mpg. I am happy. I ll never go back to 5w20. 10w30 would be the thinnest. Try it and see what you like, anybody can follow a manual.
What is supposed to happen? I pulled a lot heavier than a 14' trailer with my FX4 for about 71,000 of the 158,000 miles I put on it before I traded it on my PSD. No problems whatsoever. All these fears of xW-20 remain completely unfounded.
I would never run 5w20 with towing. My wife just took our Ford (FX2) with the 5.4 to Pennsylvania with a 14' trailer. Running Mobil 0w40. Truck runs much quieter than with 5w20. Gas mileage was excellent. Around 16 mpg. I am happy. I ll never go back to 5w20. 10w30 would be the thinnest. Try it and see what you like, anybody can follow a manual.
What is supposed to happen? I pulled a lot heavier than a 14' trailer with my FX4 for about 71,000 of the 158,000 miles I put on it before I traded it on my PSD. No problems whatsoever. All these fears of xW-20 remain completely unfounded.