Fuel question

woodman · Apr 12th, 2018, 23:47

Hello. Has anyone experienced lumpy running on Shell VPower? I normally run on plain unleaded but thought I'd give the posh stuff a try: seems much worse to me, even though it's a higher octane. The Tesco 99ron has been good, but it's not a convenient place to go for me. Is VPower a weird concoction that the Volvo engines dislike?

123GT-AMAZON · Apr 13th, 2018, 11:34

I always use shell in my classic cars and the more posh Vpower runs very well for me and has done in over 15 plus cars I have used it in

Kind regards
Robert.w

Faust · Apr 13th, 2018, 12:17

Use Shell V power in my Amazon (B20 engine) with Millers octane booster/lead replacement/ethanol stabiliser and the car seems much, much happier with it.

Bit more power and I get better fuel consumption by about 5mpg.

If your car is not happy, perhaps have a look at the timing - maybe it needs to be advanced by a couple of degrees to make best use of the 'better' fuel.

Seems odd that you car is OK on Tesco Momentum though (never used this: had some dodgy fuel years ago from Tesco so I only use that stuff in the direst of emergencies).

123GT-AMAZON · Apr 13th, 2018, 12:47

Try replacing your fuel filter

woodman · Apr 13th, 2018, 15:23

Thanks both. The fuel filter is recent. I vaguely remember having this experience with VPower once before. The engine runs nicely on regular Shell unleaded, amongst other things, but I do keep thinking I hear a little bit of pinking so I thought I'd try the higher octane to see if it eliminated the pinking. I'm reluctant to retard the timing, because it starts first turn as it is and there's a noticeable drop in performance if I go any further back.

It might be coincidence, eg the points might have just decided to need adjusting, but it just seemed odd that the change should happen when I put VPower in.

CLIVERALLY · Apr 14th, 2018, 22:55

V power and VSPe But it can foul the plugs with a redish reidue. I contacted Millars who stated that it was normal

CLIVERALLY · Apr 14th, 2018, 22:57

V power and VSPe But it can foul the plugs with a redish reidue. I contacted Millars who stated that it was normal...so in short check the plugs

Apr 12th, 2018, 23:47	#1
woodman Master Member Last Online: Mar 10th, 2023 13:03 Join Date: Mar 2010 Location: Sheffield	Fuel question Hello. Has anyone experienced lumpy running on Shell VPower? I normally run on plain unleaded but thought I'd give the posh stuff a try: seems much worse to me, even though it's a higher octane. The Tesco 99ron has been good, but it's not a convenient place to go for me. Is VPower a weird concoction that the Volvo engines dislike? __________________ 1967 Volvo 121 Auto in everyday use and rolling restoration. 2002 Audi TT quattro. (Sorry!)

Apr 13th, 2018, 11:34	#2
123GT-AMAZON 1800necwinner Last Online: Today 08:43 Join Date: Oct 2008 Location: East Anglia ,Suffolk , uk	I always use shell in my classic cars and the more posh Vpower runs very well for me and has done in over 15 plus cars I have used it in Kind regards Robert.w __________________ I grew up on classic volvos hence my passion for them born and breed into the lifestyle !

Apr 13th, 2018, 12:47	#4
123GT-AMAZON 1800necwinner Last Online: Today 08:43 Join Date: Oct 2008 Location: East Anglia ,Suffolk , uk	Try replacing your fuel filter __________________ I grew up on classic volvos hence my passion for them born and breed into the lifestyle !

Apr 13th, 2018, 15:23	#5
woodman Master Member Last Online: Mar 10th, 2023 13:03 Join Date: Mar 2010 Location: Sheffield	Thanks both. The fuel filter is recent. I vaguely remember having this experience with VPower once before. The engine runs nicely on regular Shell unleaded, amongst other things, but I do keep thinking I hear a little bit of pinking so I thought I'd try the higher octane to see if it eliminated the pinking. I'm reluctant to retard the timing, because it starts first turn as it is and there's a noticeable drop in performance if I go any further back. It might be coincidence, eg the points might have just decided to need adjusting, but it just seemed odd that the change should happen when I put VPower in. __________________ 1967 Volvo 121 Auto in everyday use and rolling restoration. 2002 Audi TT quattro. (Sorry!)

Apr 14th, 2018, 22:55	#6
CLIVERALLY Master Member Last Online: Apr 18th, 2024 23:55 Join Date: May 2010 Location: wetherby	V power and VSPe But it can foul the plugs with a redish reidue. I contacted Millars who stated that it was normal __________________ Clive "Lets turn up the juice and see what shakes loose"

Apr 13th, 2018, 12:17	#3
Faust Master Member Last Online: Yesterday 22:19 Join Date: Sep 2008 Location: Nottingham	Use Shell V power in my Amazon (B20 engine) with Millers octane booster/lead replacement/ethanol stabiliser and the car seems much, much happier with it. Bit more power and I get better fuel consumption by about 5mpg. If your car is not happy, perhaps have a look at the timing - maybe it needs to be advanced by a couple of degrees to make best use of the 'better' fuel. Seems odd that you car is OK on Tesco Momentum though (never used this: had some dodgy fuel years ago from Tesco so I only use that stuff in the direst of emergencies).

Apr 14th, 2018, 22:57	#7
CLIVERALLY Master Member Last Online: Apr 18th, 2024 23:55 Join Date: May 2010 Location: wetherby	V power and VSPe But it can foul the plugs with a redish reidue. I contacted Millars who stated that it was normal...so in short check the plugs __________________ Clive "Lets turn up the juice and see what shakes loose"

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)