This is moving the goalposts to a discussion what was ''better '' US/British aircraft and oil or Soviet aircraft and oil .
And I doubt that there is something as a better aircraft,because the qualities of an aircraft depend also on the qualities of the pilots and the technicians .
An other thing about LL aircraft : the importance of X LL aircraft depend also on the number of trained Soviet pilots and I would not be surprised if during a lot of months these LL aircraft remained idle on the ground because there were no pilots and technicians for them .
It is the same for the tanks .
About the Soviet loc reserve I will search ,I remember that some one at the AHF has given the figures .
A lot of rather twisted logic.
Not enough pilots or ground crew for Lend lease aircraft and tanks but enough for Russian built equipment?
Sources for that please.
There was nothing wrong with Russian petroleum products for Russian equipment. There is a difference between petroleum
products and petroleum as it comes from the ground.
The Best Soviet aviation fuel was about 95/96 octane. It needed a fair amount of lead added, about 4cc per kilogram. It use in Lend lease combat planes would limit performance at the very least. it's use in transports might have worked OK.
I may have inadvertently created some confusion earlier. In some accounts they claim that the Soviets mixed lend lease fuel with Soviet fuel to raise the octane rating of the soviet fuel.
I tried to point out that this was not a very efficient way of doing it. The US sent 558,766 gals. of Ethyl fluid to Russia as part of lend lease. at 3-4 CCs per Kilogram of fuel that is a lot of high octane fuel for Russian engines. Shipping something over 500,000 gallons of additive is a lot more efficient in raising Soviet base stock fuel than shipping millions of gallons of high octane fuel to be mixed with Soviet fuel. Which probably wouldn't work anyway. Aviation gasoline is a lot more complicated that most people think.
Soviets had about 13 class of steam locomotives built from 1925 on, not counting very small batches and experimentals. There were quite a number of older models which were still around. Some of the larger ones would be very hard to fire with wood. Some were already using oil firing. Some used mechanical stokers with coal. I don't doubt that the soviets resorted to wood firing on occasion. But it is a lousy way to try and move large loads long distances.
You might want to to look at :
Complete List of Lend Lease to Russia including atomic materials
for a complete list of materials sent by the US to Russia, not including combat vehicles and planes. You might not.