![]() |
#17
|
||||
|
||||
![]() Quote:
I must just comment on the first use of "lead" in car petrol. It was General Motors in the USA who came up with it in the early 1920's and produced the additive with an oil company. It was Tetra ethyl lead, or TEL. It was added to petrol in the UK in the early part of 1930's, I think from memory that you could buy petrol with or without. During WW2, in UK, TEL was added again for military use, in such large quantities, that it actually produced valve problems, and a number of modifications had to be done to engines of military vehicles during the last part of the war. When leaded was phased out in the UK, a number of lead replacement additive were marketed here and laboratory tests were done at the motor industry research site, using BMC A series engines, the top performer being one called Superblend Zero 2000, which I have used ever since. The fact about engines running below 3000 rpm and not heavily loaded not suffering, was also made during the tests. As it is, I have not come across any noticeable rise in vehicles with valve problems, not like it was in years gone by, when decokes and burnt valves were a common occurance.
__________________
Richard 1943 Bedford QLD lorry - 1941 BSA WM20 m/cycle - 1943 Daimler Scout Car Mk2 Member of MVT, IMPS, MVG of NSW, KVE and AMVCS KVE President & KVE News Editor |
Thread Tools | |
Display Modes | |
|
|