Seafoam, now ****ty MPG! - Ranger-Forums - The Ultimate Ford Ranger Resource


2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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  #1  
Old 07-02-2009
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Seafoam, now ****ty MPG!

Ok, so last week i Seafoamed my truck, 1/3 in the break booster line, full can in the gas. After that I changed the pluges to Bosch Platnium +2, changed oil to Mobile 1 Full Syn Truck and SUV and used a Mobile 1 filter.

Before, I was getting about 16.6 mpg average. Now, I'm getting around 14.3 mpg....

What could be the problem? Did I forget to change something? I forgot to add Seafoam the old oil, could that do anything? Any help would be great. Thanks guys.
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Old 07-02-2009
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How's your right foot? Are you enjoying the new "peppiness" from de-carboning the enigine? If so, that would be your problem.


After I seafoamed mine, it felt like it had more "get up and go" to it. Then my mileage went down. I stopped and thought about it, and realized I was enjoying the new "get up and go" a little too much. haha
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  #3  
Old 07-02-2009
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Quote:
Originally Posted by dangerfish View Post
After that I changed the pluges to Bosch Platnium +2
............................................^^^Rig ht there's your problem^^^...
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  #4  
Old 07-02-2009
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Are those bad plugs? Didnt want to get the ****ty ones, or the super expensive ones...


I havent knowticed any change at all really. And my foot isnt that heavy.
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Old 07-02-2009
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I'm with Shane. Thats also why you haven't noticed any new peppiness. Throw some Motorcraft fine wire platinums in there, and you'll be fine.
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  #6  
Old 07-02-2009
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I have those plugs also. Why are they bad? Detail?
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  #7  
Old 07-02-2009
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ya i put the bosch in my 4 banger all 8 plugs an my mpg went down.....
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Old 07-02-2009
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If you guys looked around, theres a million threads on this and why Bosch plugs suck in our truck. Motorcraft should be the only ones used (yea I know theres about 1% on here that actually use bosch and have had zero negative effects).
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  #9  
Old 07-02-2009
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Motorcraft or Autolite....they are virtually the same exact plug. Our trucks call for double platinum for NA engines.

I ran Bosch platinums, ran like junk, next day I put in Autolite Double Plats, ran like a drea.
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Old 07-02-2009
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I've got NGK's in mine, and there has been an issue with durability. On one plug I got only like 20,000 km out of it. I thought it was a bad plug so I switched it out. Then it changed and it was the next plug down the line. Both not producing any spark. Both plugs are a nice tan color too, no fouling or anything obvious.
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  #11  
Old 07-03-2009
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Hmm, wow. Never thought that certian plugs wouldnt work, I never thought to check it out.

I guess I'll be switching them out for some either motorcraft or Autolite plugs asap.

Whats the absolute best? Iridium or Platinum?
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  #12  
Old 07-03-2009
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i love autolites
always ran the 104's in my grand prix.

which ones should be run in a 4.0 sohc? just so i know for future reference..

/thread jack :D
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  #13  
Old 07-03-2009
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also future reference dont use a mobil filter. their oil is the shyt but their filters suck. use either OEM or a purlator pure one
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  #14  
Old 07-03-2009
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Yeah Bosch plugs and Ford engines don't get along.
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Old 07-03-2009
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Well getting back to the sea foam I put the whole thing in the engine, and haven't had any mpg problems, but I also got a magnum performance module too, had it for a while, but as mentioned before I can tell a difference. oh by the way that madule works great, it is the best $25 I spent. sorry sorta thread jacked
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  #16  
Old 07-04-2009
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Bosch plugs are only good in one place....

Staying on the sales rack.
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  #17  
Old 07-04-2009
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Well this stinks I've been running Platinum +2s for almost a year now. I might need seafoam it earlier than scheduled. Well I'll be switching to motorcraft soon.
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