anyone running Rotella 5w40 full synth all year round? - Diesel Truck Forum -
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post #1 of 7 (permalink) Old 04-02-2010, 05:47 AM Thread Starter
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anyone running Rotella 5w40 full synth all year round?

I got 5 gallons of full synthetic rotella 5w40. should i save it for the winter? or should i just throw it in there now.

I live in Rhode island. It gets in the high 90's here in the summer. will the oil be too thin for the summertime?

2000 F-350 Super cab, Tadds tunes, AFE Pro Guard intake, 4" MBRP cool Duals, Nexus Gauges , Tubonetics Ball Bearing Turbo.
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post #2 of 7 (permalink) Old 04-02-2010, 05:54 AM
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you will ok with that oil in the summer....surely your change it by summer time.

1995 f250 2wd PSD, auto, DIY intake, DIY exhaust, PHP tuned 40hp tune , Hybrids injectors 238cc..... 13.618 in the 1/4 at 6000lbs.

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post #3 of 7 (permalink) Old 04-02-2010, 06:10 AM
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I run it year round...sometimes year and a half round. The truck doesn't get driven much I usually end up changing the oil about once every year to year and a half. Depends on when Blackstone tells me its due.


2012 F350 KR Dually, stock...bone stock.

early 99 PSD CC F250, DP Tuner F-5, Stealth Stage I, Casserly 160cc singles, Monsterbox Tranny, MBRP cool duals, ITP Regulated fuel system, Cobalts and Performax gauges, and way to much else to remember right now. **traded**

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post #4 of 7 (permalink) Old 04-02-2010, 06:57 AM
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the 5 doesn't really even matter. the 40 is what you care about. the 5W stands for 5 Winter. so it acts like a 5 weight while cold, and a 40 while hot. I run 0W30 year round in my gutless ranger, and i don't' think twice about it. Before some people ran him off, this sites amsoil dealer Bill put almost 30K miles on 5W30 in his 7.3L on one interval, and was still good to go.

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post #5 of 7 (permalink) Old 04-03-2010, 01:56 PM
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I run synthetic all year, and have since I bought the truck, and I have had no issues.

2002 F350XLT SRW 4x4 CrewCab 160k 2" Leveling Kit, Warn Premium Hubs, Prodigy TBC, Hankook DynaPro ATM's, '08 Diff Cover, Foil Delete, Edge Evolution II, Tymar Intake, 4" Turbo Back Diamond Eye Exhaust, DieselSite Coolant Filtration System & DieselSite Engine / Intercooler Boots!

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post #6 of 7 (permalink) Old 04-04-2010, 11:34 PM
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I run that stuff year round. Never had any problems.

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post #7 of 7 (permalink) Old 04-05-2010, 03:03 AM
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I've been running Rotella Synthetic 5w40 year round for about the last 4 years with great UOA results from Blackstone.

I just recently switched over to Schaeffer's 5w synthetic and noticed a faster start time. I've not pulled a UOA on this oil yet, but I anticipate it being even better than the Rotella.


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