dexter860 Posted April 19, 2020 Share Posted April 19, 2020 Just bought another truck , 2014 small sleeper Mack with mp7 an M drive , still have my 95 small sleeper with E7 350 and 4:17 rears , it is getting 6.7 to 6.8 pulling a flatbed mainly in Ohio . I'm hoping this new truck gets better mpg but bobtailing home empty the gauge seemed to move more than I expected. Is it reasonable to expect to outperform the 95 on fuel economy, or not? If this thing burns more fuel it will probably be finding another home. The 95 has been a very economical truck to operate. Quote Link to comment Share on other sites More sharing options...
james j neiweem Posted April 19, 2020 Share Posted April 19, 2020 The E7 wasn't hampered with as much pollution crap like the M-7. The e-6 and E-7 was about as efficient as you could get in a small block. 2 Quote Link to comment Share on other sites More sharing options...
brettj3876 Posted May 20, 2020 Share Posted May 20, 2020 Keep that 95 you'll be glad you did. If any mpg gain at all, the added maintenance cost will offset the difference. On a 99 etech 460 with 4.42 were seeing 6.1-6.3 avg running PA/NJ doing the speed limit. Around 7.3 with the 93 avg 60k loads Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted May 21, 2020 Share Posted May 21, 2020 There is no comparison.... your "Volvo" has B.S. controlling fuel going in... and exhaust. coming out... The E-7, may be slow.. but its deliberate.. Keep it running as long as you can.. Hell, if the exhaust system gives you a problem, you will be able to smell it, and see it... Without the High repair cost, and having to explain why you cant do a re-gen to a tech.... Anyway... I m just having fun here... Go Bulldog!! Jojo 1 Quote Link to comment Share on other sites More sharing options...
brettj3876 Posted May 21, 2020 Share Posted May 21, 2020 On the 93 350 after doing an inframe, blixxton, turbo & injectors we saw roughly 1-1.5 mpg gain Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted December 2, 2020 Share Posted December 2, 2020 I used to be dispatched out of Mehoopany, P.A. in '98... other than the smell of the P&G paper plant , it was beautiful country.. For what its worth,,, I will always be A Grey motor Guy.... Theres too much going on in the MP/Volvo D series.. Good luck with the MP.... They get expensive quickly.. 1 Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted December 4, 2020 Share Posted December 4, 2020 Get rid of the M-Drive...!!!!!! Trust me!!! I was a mack Tech For years.... I'm really a mechanic.... The M-Drive is junk!!, Clutch issues, Speed Sensor issues, The slightest wiring issue will leave you stuck, and in some cases the truck will not turn over, so you may just freeze youre butt off this time of year when it decides to act like a woman... WHY would we drive trucks that require software updates as often as our home computers...? These machines are meant to be DRIVEN... Good luck Sir.... Jojo.... P.S. Keep the E-7!! 2 Quote Link to comment Share on other sites More sharing options...
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