Noeleter
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The MSDS sheets as i mentioned earlier. Required by Workplace Health and Safety, it shows the ingredients of the item and it's properties, As i said earlier they (BP, United) are the cleanest being no additives making it 99-100% pure Gasoline, if you think they are wrong then it's not only me you need to convince with lab tests. Here ive linked them all below.
here is united's Premium 98 (Petrol 86290-81-5 99-100%)
Premium 98
here is BP's Ultimate 98 (Petrol 8006-61-9 100%)
BP Ultimate unleaded | Products & services | BP Australia
here is Caltex's Vortex 98 (Gasoline 8006-61-9 90-100% Benzene 71-43-2 0.1% - 1%) doesn't add upto 100% though they quote the balance is "Ingredients determined to be non-hazardous". Sounds like water to me? lol
Caltex Australia: Home
Try and find shell's MSDS sheets for there VPower on there website, you wont, it's still public but you need to spend an hour finding it.
If you goto the shell website Shell in Australia - Australia then Click TGP under tools down the bottom, click contact viva energy australia - opens new window, window comes up for royal dutch click continue, click services, safety datasheets, click Download an SDS for Shell Fuel products, enter the viva website and search for v power.
Gasoline 86290- 81- 5 90- 100 %
BENZENE 71- 43- 2 <=1 %
Complex mixture of hydrocarbons consisting of paraffins, cycloparaffins, aromatic and olefinic hydrocarbons (including benzene at 1.0%v/v maximum), with carbon numbers predominantly in the C4 to C12 range. May also contain several additives at <0.1% v/v each.
Contains Benzene, CAS # 71-43-2. Contains Toluene, CAS # 108-88-3. Contains Ethylbenzene, CAS # 100-41-4. Contains n-Hexane, CAS # 110-54-3. Contains Xylene (Mixed Isomers), CAS # 1330-20-7. Contains Naphthalene, CAS # 91-20-3. Contains Cyclo-hexane, CAS# 110-82-7. Contains Tri-methyl-benzene (all isomers), CAS# 25551-13-7.
Despite what people may think there is generally very little difference in the quality of fuels from the major suppliers, at least when it leaves the refinery. There is the possibility that fuels may be contaminated by service station tanks and that it may age before it is sold. Different brands will add small quantities of different additives.The difference in MSDSs is generally more a difference in terminology eg complex mixture of hydrocarbons can be another term for petrol or gasoline. Benzene used to be common to increase octane rating and as an anti-knock before lead came along. Since lead has been banned it has made a comeback. Most other additives are added in such small quantities that they don't have to be listed on MSDS. Most of the claims made about fuel differences are marketing hype. There have been instances of significant differences, however. Several years ago there was a problem with NZs only refinery so fuel was imported. A lot of the local vehicles were not compatible with the fuel which destroyed a lot of rubber components in the fuel systems of a lot of cars.