Thinking about switching to 5w-40 - Ford Powerstroke Diesel Forum
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post #1 of 7 Old 11-09-2009, 11:07 AM Thread Starter
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Thinking about switching to 5w-40

I am thinking about doing an oil change and switching from 15w-40 to 5w-40 for winter but my only reserve is that I live in Illinois and we have been having a random warm up(mid 50s-70). Will it hurt anything if 5w-40 is in the truck and it warms up outside?
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post #2 of 7 Old 11-09-2009, 11:08 AM
Hate stupid people

 
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what part of illinois are u from?

Illiana Strokers DICtator
EFI Live tuned 6.7
97 F350

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post #3 of 7 Old 11-09-2009, 11:08 AM
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no 5-40 iz all i use in both my trucks now !!!

-Mike-
2006 F-350 Lariat, Supercab, 6.0L, 3.73's...Rhinolined Bed...6 Spd Handshaker...Mag-Hytec Diff. Covers...Smoked Recon Lights...Amsoil oils front 2 back...Optima Yellow Tops...MBRP 5" ST8 Pipe, Turbo Back...Dieselsite Coolant Filter...Amsoil/Injen CAI...SCT SF3 Canned Tunes 4 Now...CFM Intake Manifold and Boost Tube...Blue Spring Upgrade...Edge Insite CTS !!!
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post #4 of 7 Old 11-09-2009, 11:10 AM Thread Starter
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Rockford.
5w-40 year round?
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post #5 of 7 Old 11-09-2009, 11:42 AM
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There was just a thread about the 5w40, Valvoline Premium Blue or the Mobil 1 Turbo Diesel Truck 5w40...the only way to go

'07 F-250 PSD 4x4 . S&B, 5" exhaust, zoodad, blue spring, '03 Turbo, 6.4 starter, 2.5 f/coils, adj Trac bar, 2" r/add-a-leafs, egr delete, DC 185 alt, Procomp shocks, SCT SF3 tuner, F-Detroit Truetrac, R-Detroit Locker, 4:10 gears, LT315/70r17 Duratracs, Amsoil Gear lube, Amsoil FE ATF, Delo 400 LE 5w30 diesel, Delo ELC, archoil 9100/ar6200, bpd ficm, arp studs, oem gaskets, HD water pump, stc, plugs, stand pipes, 6.4 banjo bolts, monitor, new oil cooler, coolant filter
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post #6 of 7 Old 11-09-2009, 11:48 AM Thread Starter
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I literally just got done reading that thread. I found it right after I posted. Thanks. I'll be doing the switch tonight.
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post #7 of 7 Old 11-09-2009, 12:12 PM
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I run Mobil 1 TDT year round in WI..
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