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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

Transmission Fluid Brands?

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Old Aug 15, 2018 | 03:11 PM
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SNIPER168308's Avatar
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Transmission Fluid Brands?

its time for a auto tranny svc on my 05 6.0 PSD. What trans fluid you all running in yours? I know it calls for SP/LV, but have you all tried any other brand? For example: I went over to Amalie Universal Synthetic on my ‘00 7.3 PSD,, prolly 8-10 yrs ago. No issues on the 7.3 tranny whatsoever and at 311k on the clock.

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Old Aug 15, 2018 | 03:17 PM
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Some have tried with good results and others have failed. Ultimately use Motorcraft fluid and be done with it. The original fluid was a full synthetic so you are not gaining anything going to amsoil. If it's not available and you need fluid immediately the valvoline max life in the red bottle covers the needs and mirrors the fluid properties. The Cst value is critical in the fluid for good operating characteristics.
 
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Old Aug 15, 2018 | 09:08 PM
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Mercon SP/LV end of story
why change now when you have that many miles. my truck also has 362k on orig. tranny
DO NOT USE MERCON V
 
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Old Aug 16, 2018 | 07:37 AM
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I have had a Suncoast kit in my truck for 200K+ miles and all I will run is Mercon SP. I ran the LV for 40K+ miles and had shifting problems so I went back to SP. IMHO it just works better.
 
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