Synthetic oil vs rotella t4 - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 21 (permalink) Old 08-28-2018, 11:32 PM Thread Starter
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Synthetic oil vs rotella t4

01 7.3l . I changed my oil to rotella t4 semi synthetic mix. Mow I have to add a quart every 1500 miles and I have zero leaks. Before I switched the oil I never had to add any between oil changes. Also I have very little smoke only on hard acceleration. Is this common when going to a synthetic oil?

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post #2 of 21 (permalink) Old 08-28-2018, 11:47 PM
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Re: Synthetic oil vs rotella t4

curious what oil had you been running?

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post #3 of 21 (permalink) Old 08-29-2018, 03:51 AM Thread Starter
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Re: Synthetic oil vs rotella t4

I meant to say I was running rotella t4 then changed to rotella t5 synthetic blend and also a big bottle of hotshots Sticktion elimitator.

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post #4 of 21 (permalink) Old 08-29-2018, 03:54 AM Thread Starter
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Re: Synthetic oil vs rotella t4

T4 was what I always ran before but this past time I changed to the T5 to see if it ran any better or fuel milage changed.

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post #5 of 21 (permalink) Old 08-29-2018, 05:29 PM
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Synthetic oil vs rotella t4

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Originally Posted by [email protected] View Post
I meant to say I was running rotella t4 then changed to rotella t5 synthetic blend and also a big bottle of hotshots Sticktion elimitator.

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I have been running T5 in my truck for two years and it will use a Quart of oil in 4000 plus miles. I only other time it used a lot of oil is when my turbo seal was going bad and pushing oil out the exhaust side of the turbo. That time it was using 3 quarts every 3000 miles. I noticed a slight mileage improvement maybe one mile to a gallon. The one other improvement I have noticed is the oil temp dropped about 7 degrees.


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post #6 of 21 (permalink) Old 08-30-2018, 01:54 AM Thread Starter
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Re: Synthetic oil vs rotella t4

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I have been running T5 in my truck for two years and it will use a Quart of oil in 4000 plus miles. I only other time it used a lot of oil is when my turbo seal was going bad and pushing oil out the exhaust side of the turbo. That time it was using 3 quarts every 3000 miles. I noticed a slight mileage improvement maybe one mile to a gallon. The one other improvement I have noticed is the oil temp dropped about 7 degrees.


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Thank you for the info. I have a brand new turbo kc38r stage 2 that's only been on my truck 2 months. I'll pull my down pipe to see if I see any oil. I'm putting on new riff raff boots this weekend so I'll already be in it anyways.

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post #7 of 21 (permalink) Old 08-30-2018, 03:27 AM
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Re: Synthetic oil vs rotella t4

Pretty normal for leaks to develop after switching to synthetics. Don't know why it happens but it does happen sometimes. Switch back to conventional and it'll probably go away.
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post #8 of 21 (permalink) Old 09-02-2018, 03:24 AM Thread Starter
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Re: Synthetic oil vs rotella t4

Found oil leaking through my intercooler boots and cac boots. I replaced them with a new set from Riff Raff diesel. Now I will see if I'm losing anymore oil. I was shocked how much oil was on top of my engine.

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post #9 of 21 (permalink) Old 09-03-2018, 05:01 PM
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Re: Synthetic oil vs rotella t4

Dump the CCV (crankcase vent) to the ground, instead of into the intake, and your CAC leaks will disappear.


The "original" design of the IH/Navistar T444e was an atmospheric CC vent. Ford added the crankcase vent to intake to meet light duty/automotive emission standards.


You can reverse the dog-house on the rocker cover (face the outlet to the rear), and hose or pipe it to the ground. This is the way Navistar did it.


My truck's been running this way for years and years...
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post #10 of 21 (permalink) Old 09-03-2018, 06:10 PM Thread Starter
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Re: Synthetic oil vs rotella t4

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Originally Posted by Calico5 View Post
Dump the CCV (crankcase vent) to the ground, instead of into the intake, and your CAC leaks will disappear.


The "original" design of the IH/Navistar T444e was an atmospheric CC vent. Ford added the crankcase vent to intake to meet light duty/automotive emission standards.


You can reverse the dog-house on the rocker cover (face the outlet to the rear), and hose or pipe it to the ground. This is the way Navistar did it.


My truck's been running this way for years and years...
How much oil do you loose between oil changes by blowing it out on the ground? Just curious as to how much oil blows through the ccv. Thanks.

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