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What did improve the fuel economy for you?

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70
This topic is in the MVS Volvo Repair Database » POLL: What Helps MPG?
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What did improve the fuel economy for you?

New sparkplugs
29
8%
Correct gap for sparkplugs
17
5%
New plug wires
13
4%
New cap rotor or coils
17
5%
New or clean MAF
18
5%
Clean injectors
13
4%
New O2 sensor
18
5%
New air filter
26
8%
Clean PCV system
15
4%
Alignment
10
3%
Suspension
2
1%
Other stage 0 related (properly tuned car) - please reply with details
4
1%
Tire inflation - at recommended pressure
20
6%
Tire inflation - a few psi over recommended pressure
13
4%
Tire profile or brand
3
1%
Gas octane
14
4%
No ethanol in gas
6
2%
Gas additives - please reply with details
3
1%
Small amount of acetone in gas
0
No votes
Synthetic Oil (Oil quality)
12
3%
Oil additives- please reply with details
1
0%
Air filter other then stock - please reply with details
5
1%
Reduced weight
13
4%
AC Off
17
5%
Outside temperature
10
3%
Driving with closed windows
8
2%
No roofrack
11
3%
Drafting
2
1%
Cold air intake mod - please reply with details
5
1%
Performance mod - please reply with details
5
1%
Exhaust mod - please reply with details
4
1%
Other - please reply with details
11
3%
 
Total votes: 345
Dave in Maine
Posts: 75
Joined: 8 June 2015
Year and Model: 2009 S60 2.5T
Location: Maine
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Re: What did improve the fuel economy for you?

Post by Dave in Maine »

When I got my 96 850 tuned up - plugs, wires, clean injectors, yadda yadda close to state 0 - my mechanic called me over: "Hey, you gotta see this"
"What?"
"I took this out." He pulled out of his pocket a Volvo-label spark plug. Looked pretty good, but it had a big gap.
"I think this is original to the car. The others, too."
"Gee, 200,000 miles on a set of plugs. Who'd'a thought it?"

My mpg went up 10%.
1996 850 Turbo Gold Edition, 7 years' reliable service and >220k mi, sadly now gone
2009 S60 2.5T, sent away after taking me down Via Dolorosa. Happy to be rid of it.
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User avatar
BlackBart
Posts: 6492
Joined: 10 December 2016
Year and Model: 2004 XC70 BlackBetty
Location: Over the far far mountains
Has thanked: 927 times
Been thanked: 884 times

Post by BlackBart »

When my car broke.....and it sat for three weeks...... my mileage went WAY up. I burned zero gasoline.
ex-1984 245T wagon
1994 850T5 wagon
2004 XC70 wagon BlackBetty
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scot850
Posts: 14864
Joined: 5 April 2010
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
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Been thanked: 1709 times

Post by scot850 »

My wife is now using the car for the summer. That is saving me a fortune as I am not filling it with premium gas!! :lol: :lol:

Neil.
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - Sold
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