twitter from chris (aka): MyAppleStuff: Must take a break from the Mac ...... Revolution MX battery light has been red for the last hour. Set a load of stuff uploading/downloading

Tips On Filling Your Car With Petrol

June 21st, 2008 - Chris Marshall

This is a true email that is ‘doing the rounds’. It is amazing. Well worth the read, and very likely to save you money!!!!

I don’t know what you guys are paying for petrol….. but here in Durban we are also paying high prices, up to

R 8.50 per litre. My line of work is in petroleum and has been for about 31 years now. So here are some tricks to get more of your money’s worth for every litre.

Here at Marian Hill Pipeline where I work in Durban, we deliver about 4 million litres in a 24 hour period through the pipeline. One day is diesel, the next day is jet fuel, and petrol, LPR and Unleaded. We have 34 storage tanks here with a total capacity of 16,800,000 litres.

Only buy or fill up your car in the early morning when the ground temperature is still cold..

Remember that all Service Stations have their storage tanks buried beneath the ground. The colder the ground the more dense the fuel. When it gets warmer petrol expands, so buying in the afternoon or evening ………. your litre is not exactly a litre. In the petroleum business, the specific gravity and the temperature of the petrol, diesel, jet fuel, ethanol and other petroleum products play an important role. A one degree rise in temperature is a big deal in this business but the Service Stations do not have temperature compensation at the pumps.

When you are filling up do not squeeze the trigger of the nozzle to a fast mode.

If you look you will see that the trigger has three (3) stages; low, middle and high. In slow mode you should be pumping on low speed, thereby minimising the vapours that are created while you are pumping. All hoses at the pump have a vapour return. If you are pumping on the fast rate, some of the liquid that goes into your tank becomes vapour. Those vapours are being sucked up and back into the underground storage tank so you’re getting less worth for your money.

One of the most important tips is to fill up when your tank is HALF FULL.

The reason for this is, the more fuel you have in you tank, the less air occupying its empty space. Petrol evaporates faster than you can imagine. Petroleum storage tanks have an internal floating roof. This roof serves as zero clearance between petrol and the atmosphere, so it minimises the evaporation. Unlike Service Stations, here where I work, every truck that we load is temperature compensated so that every litre is actually the exact amount.

Another reminder. If there is a fuel truck pumping into storage tanks when you stop to buy, DO NOT FILL UP. Most likely the petrol/diesel is being stirred up as the fuel is being delivered and you might pick up some dirt that normally settles on the bottom.

Hope this will help you get the most value for your money. Remer to always fill your car when the tank shows “half’. Always fill up in the early morning. Always fill up in slow mode.

The person that had sent this e/mail on had added a “rider” which said the following. This actually works. I tried early Saturday morning before I came to work. $30.00 from 1/2 tank filled up my car. Usually it is $55.00. Amazing. This has got to be the most useful e/mail I have received all year.

Thanks to Richard from Alcor Properties for sending me this.

This entry was posted on Saturday, June 21st, 2008 at 1:24 pm and is filed under Odds & Sods. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

Related Posts

Trackbacks & Pingbacks

3 Responses to “Tips On Filling Your Car With Petrol”

  1. Danny Says:

    Wow, will have to give this a try!

  2. Wayne LeFevre Says:

    I don’t quite understand… (nothing new there, though! :) ) As an aircraft mechanic for the majors, I know that the density of the fuel plays an important part when filling up an aircraft. But it’s for weight. The more dense the fuel, the more it weighs, which matters greatly with weight and balance.

    What I don’t understand, though, is how it applies here. Maybe someone can let me know? In other words, a liter is a liter, no matter how much it weighs. A gallon of jet fuel weighs about 6.8 pounds at 29.97 density altitude and 15 degrees Celsius. (or something like that. I’d have to get out the manuals to be sure.) Yet it’s still a gallon. So how can temp make it more? I mean, you can’t compress a liquid, right?

  3. Chris Marshall Says:

    As I read it the ‘issue’ is that once you start the pump going it registers, although if it is actually pumping vapours rather than fuel it is going to take longer to fill the tank.

    So although you stop pumping when you have reached the number of liters you want, the pump will register more as it has registered the vapours as well.

    Something like that!!!

Leave a Reply

Quote selected text