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gas mileage and seafoam

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spudz6975
Posts: 6
Joined: 31 Mar 2012, 16:14
Year and Model: 2001 V70 T5 Wagon
Location: Greenville, SC

Post by spudz6975 »

2001 v70 t5 - I just finished the seafoam treatment and the car is running great. smooth idle, good acceleration , but I noticed my average gas mileage has dropped according to the onboard computer. I haven't actually checked it against the odometer. is there any accuracy to the computer estimate. and why would it drop after I cleaned the intake, crankcase and fuel system? any thoughts?

JRL
Posts: 9350
Joined: 22 Nov 2005, 14:07
Year and Model: Several
Location: 19333
Been thanked: 16 times

Post by JRL »

It shouldn't.
You may just be driving it a bit more briskly and you don't realize it since it's running better
Mod note. Jim passed away in early 2022, his contributions to this forum are immortal, and he is missed. RIP

2000 V70R Black, 144,000 miles Wife's R.
2007 V70 2.5T White/Oak 111,000 MILES. Polestar tune, IPD bars, rear spoiler, dark grey Thors, DWS 06, HU850, sub.

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