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Old 07-24-2019, 12:20 PM   #81
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Originally Posted by rczrider View Post
I think that (at least part of) the argument is that the Focus is the opposite: a car set up for premium that will accept regular. I can buy that, as no one purchasing a Focus would expect to need premium fuel.

Still, the rest of your explanation makes sense as it pertains to the DPS6, and just goes to back up the idea that using premium doesn't magically fix the problems inherent to the DPS6.

I'm sure Ford would love to come back to consumers and say they just need to put in high-octane fuel.
But you would think that all of us running 87 octane would be experiencing knocking due to the engine being poorly tuned for that but that is not the case. For those of us not experiencing knocking, going to a higher octane without a tune optimized for this fuel, simply running premium would lead to marginal gains at best. These vehicles aren't designed to detect the octane and adjust the timing accordingly. Here's a pretty good summary on the octane vs timing subject.

It has been said that the DCT problem has already cost Ford $3 billion so after all this time and money spent trying to address it for the least amount of money, if there was an inexpensive solution such as changing which fuel you put in it (which anyone with this problem would be happy to do if it did indeed fix transmissions), they would have come out with that and we wouldn't be where we are today with all of this.

Last edited by IrishBrewer; 07-24-2019 at 02:06 PM.
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Old 07-24-2019, 12:38 PM   #82
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Originally Posted by IrishBrewer View Post
But you would think that all of us running 87 octane would be experiencing knocking due to the engine being poorly tuned for that but that is not the case. For those of us not experiencing knocking, going to a higher octane without a tune optimized for this fuel, simply running premium would lead to marginal gains at best. These vehicles aren't designed to detect the octane and adjust the timing accordingly.

It has been said that the DCT problem has already cost Ford $3 billion so after all this time and money spent trying to address it for the least amount of money, if there was an inexpensive solution such as changing which fuel you put in it (which anyone with this problem would be happy to do if it did indeed fix transmissions), they would have come out with that and we wouldn't be where we are today with all of this.
I think it was Tom who said the the knock detection on the 2.0 was actually pretty good, which is why it runs "fine" on 87.
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Old 07-24-2019, 02:56 PM   #83
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DCT Transmission Article

We need to put this octane thing to bed. As said earlier, do research on 87 octane fuel rating and Ford Powertrain Development Team Durability testing. The PCM strategy and calibration includes the use of 87 octane fuel in all driving conditions. Nobody on this thread, including MYSELF, is informed or equipped to dispute this fact specific to Ford approving 87 octane fuel. Separately, higher octane rating will in no way fix issues with the tranny. Letís move on now

And just to get ahead of the replyís, I am not disputing that the use of higher octane MAY improve engine performance in SOME scenarios. Cheers!

Last edited by Focus_Hack; 07-24-2019 at 03:04 PM.
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Old 07-24-2019, 05:41 PM   #84
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I had shudder between 1 and 2. I had noise like marbles coasting to a stop. If traveling with traffic and traffic slows then speeds back up, I was scared to death. Was afraid to let anyone else in my family use the car for all those reasons.
I had turning a corner shirting to 2 noise and feeling as if transmission was going to break.
As far as I know, Fords ecm adapt and adjust for octane. That's on edge and escape forums too.
After 4 tanks of 93, I have none of those symptoms. Engine and trans are extremely quiet. Shifts hold longer, and no longer try to hunt for gears.
That's why I think its more than a trans issue.
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Old 07-24-2019, 06:08 PM   #85
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Quote:
Originally Posted by magnetic View Post
I had shudder between 1 and 2. I had noise like marbles coasting to a stop. If traveling with traffic and traffic slows then speeds back up, I was scared to death. Was afraid to let anyone else in my family use the car for all those reasons.
I had turning a corner shirting to 2 noise and feeling as if transmission was going to break.
As far as I know, Fords ecm adapt and adjust for octane. That's on edge and escape forums too.
After 4 tanks of 93, I have none of those symptoms. Engine and trans are extremely quiet. Shifts hold longer, and no longer try to hunt for gears.
That's why I think its more than a trans issue.


Again, using higher octane alone does not and will not fix the tranny issue. You can twist this all you want in your mind but this is not a fix. With all due respect, stop pushing this stuff as itís how bad rumors start and is not a good look. BTW, that pcm/ecm strategy is nothing new and has been widely used since the late 90ís by most auto makers. Please just stop itís embarrassing.
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Old 07-24-2019, 08:18 PM   #86
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Jeez let him have his opinion. Won’t hurt anybody. And I learned a long time ago to be very careful about what I was sure is true.
Irritates me that my great 5 speed car has lost major value because of these DCT transmissions.
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Old 07-24-2019, 09:12 PM   #87
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Quote:
Originally Posted by Focus_Hack View Post
Again, using higher octane alone does not and will not fix the tranny issue. You can twist this all you want in your mind but this is not a fix. With all due respect, stop pushing this stuff as itís how bad rumors start and is not a good look. BTW, that pcm/ecm strategy is nothing new and has been widely used since the late 90ís by most auto makers. Please just stop itís embarrassing.


No one said it would? What two members on here have said is that the higher octane seemed improve the drivability of the car. They arenít Ďpushingí anything nor were they starting any rumors. They were simply sharing their experiences & opinions with running higher octane fuel & how their DCTís seemed to react better to the 93. Itís not embarrassing whatsoever. Iíll tell you what is embarrassing though, itís the Ford engineers that allowed this to go on after 2012. This shouldíve been resolved in 2012 & maybe the Focus & would still be selling well in the US.



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Old 07-24-2019, 09:30 PM   #88
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Quote:
Originally Posted by Pokerrun388 View Post
No one said it would? What two members on here have said is that the higher octane seemed improve the drivability of the car. They arenít Ďpushingí anything nor were they starting any rumors. They were simply sharing their experiences & opinions with running higher octane fuel & how their DCTís seemed to react better to the 93. Itís not embarrassing whatsoever. Iíll tell you what is embarrassing though, itís the Ford engineers that allowed this to go on after 2012. This shouldíve been resolved in 2012 & maybe the Focus & would still be selling well in the US.



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I agree nothing wrong with sharing thoughts.
I don't believe it was an engineering decision though, it was a money decision.
Their own engineers told them nope not going to work.

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Old 07-24-2019, 09:39 PM   #89
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Quote:
Originally Posted by Pokerrun388 View Post
No one said it would? What two members on here have said is that the higher octane seemed improve the drivability of the car. They arenít Ďpushingí anything nor were they starting any rumors. They were simply sharing their experiences & opinions with running higher octane fuel & how their DCTís seemed to react better to the 93. Itís not embarrassing whatsoever. Iíll tell you what is embarrassing though, itís the Ford engineers that allowed this to go on after 2012. This shouldíve been resolved in 2012 & maybe the Focus & would still be selling well in the US.



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Uh someone needs to slowly re-read the thread.

I am simply being responsible to those reading and maybe believing bad information on a false fix.

I have been wrenching and tuning cars for more than 30 years; itís tiring when people push bad info or as you try to soften it as Ďsharing an experienceí. If you donít appreciate the help in clarification then you are welcome to ignore me. Cheers!
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Old 07-25-2019, 09:52 AM   #90
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Quote:
Originally Posted by Focus_Hack View Post
I am simply being responsible to those reading and maybe believing bad information on a false fix.
This. Heck, he could believe knocking the hood 3 times and dancing a jig around the car will fix the DPS6...it doesn't hurt anything, but it is also untrue.

I truly believe it's important to point out misconceptions. Not so I can be "right" or to tear them down in some way, but because someone who doesn't know any better might think the person spreading blatantly false information knows more than they do.
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