What kind of symptoms can you get if you leave the oil in too long for 7.3? - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 29 (permalink) Old 08-13-2009, 05:19 PM Thread Starter
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What kind of symptoms can you get if you leave the oil in too long for 7.3?

Idle knock?

I have 8500 miles on the oil with a bypass system. Analysis says the oil is fine, but I am curious if it causes a knock.

2002 f-350 PSD, 4x4, cc short bed, 6spd, ccv mod, airdog, AIS filter, isspro ev and scangauges, detroit TT, ITP boost annihalator, ITP RR, bellowed up-pipes, ats housing, turbomaster, 3.5 dp magnaflow, very happy with ultra smooth and linear PHP 50t, 80DD and "whisper" tunes.
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post #2 of 29 (permalink) Old 08-13-2009, 05:34 PM
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Re: What kind of symptoms can you get if you leave the oil in too long for 7.3?

Idle quality will go to $hit and you'll see odd fluctuations in ICP under load.

Knocking would be fuel related or valve train issues.

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post #3 of 29 (permalink) Old 08-13-2009, 05:36 PM
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Re: What kind of symptoms can you get if you leave the oil in too long for 7.3?

Had an amsoil distrubutor come in once a month for idle issues he finally quit with the amsoil pitch and started running dino oil and changing it more often in his high miles turd.

97 crew cab shorty-4x4 Lots of mods .
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post #4 of 29 (permalink) Old 08-13-2009, 08:06 PM
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Re: What kind of symptoms can you get if you leave the oil in too long for 7.3?

If you have a really picky engine like one of mine was it will randomly shut down on ya until you change it out

early 99 F350 Supercab longbed 4x4, Diprical gauges,GTP38R, Swamps competion fuel system with bowl delete,custom intake, 4in downpipe to 6in stacks, 200/30% hybrids from swamps, tuned by swamps, head studs.main studs, WOP cryo forged rods, ceramic coated pistons,Adrenalin HPOP,DI cam. Train horns, Ranchand front bumper DMI rear, Kumho kl71
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post #5 of 29 (permalink) Old 08-13-2009, 11:27 PM
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Re: What kind of symptoms can you get if you leave the oil in too long for 7.3?

Hard starting... IE.. longer cranking times. it happens with mine @ about the 5K mark with 5-40 synthetic rotella

i've read around, some guys go 10K with the bypass system... but idk... some trucks at my work go 5-25K miles on Rotella 15-40... but that's big cat and cummins engines...

2002 F350 extended cab XLT, 4x4 auto,194K mi @ 10/25/13, ELF7405, DP F5, ultra light gauges, all kinds of "improvements" Yukon Grizzly locker 6K helper springs, x code fronts. 2 Y2K jetta Tdi. RC2 tuned
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post #6 of 29 (permalink) Old 08-13-2009, 11:55 PM
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Re: What kind of symptoms can you get if you leave the oil in too long for 7.3?

everything said above plus you could end up clogging your IPR.

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post #7 of 29 (permalink) Old 08-14-2009, 01:15 AM Thread Starter
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Re: What kind of symptoms can you get if you leave the oil in too long for 7.3?

Idle knock is not a symptom eh? I was hoping. I have 8500 on now, with rotella syn 5/40 and a bypass. I may change it anyway.

2002 f-350 PSD, 4x4, cc short bed, 6spd, ccv mod, airdog, AIS filter, isspro ev and scangauges, detroit TT, ITP boost annihalator, ITP RR, bellowed up-pipes, ats housing, turbomaster, 3.5 dp magnaflow, very happy with ultra smooth and linear PHP 50t, 80DD and "whisper" tunes.
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post #8 of 29 (permalink) Old 08-14-2009, 03:38 AM
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Re: What kind of symptoms can you get if you leave the oil in too long for 7.3?

Uhh.. yeah. That oil is WAY too thin at this point.

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post #9 of 29 (permalink) Old 08-14-2009, 03:43 AM
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Re: What kind of symptoms can you get if you leave the oil in too long for 7.3?

Oil change is a tune up just do it. Your truck will love you for it.

97 crew cab shorty-4x4 Lots of mods .
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post #10 of 29 (permalink) Old 08-14-2009, 03:45 AM
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Re: What kind of symptoms can you get if you leave the oil in too long for 7.3?

Face it guys all the by pass and oil still wears out .These damn things are just hard on oils PERIOD ! I change my oil at 4k now.

97 crew cab shorty-4x4 Lots of mods .
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