Electric fuel pumps to pre-lube engine before a cold start?

[Big time]

It is said that most of the engine wear comes from cold starts when the oil is in the pan and the metal parts grind themselves dry.

It is also said that many NY yellow cab engines lasted many thousands of miles because they only had one cold start per day.

Also Formula 1 engines need oil and coolant to be pre-warmed and pre-pumped before starting otherwise the engine will grind so badly it will be ruined.

I remember some electric pre-lube oil pumps were sold at JC Whitney years ago.

Are they worth it?
If OEM automakers were to adopt them, Would they allow closer engine tolerances thus improving engine efficiency while reducing emissions?

[gone-ot]

Pumping COLD oil will take a LOT of electrical power because of viscosity "thickness" when cold.

But, yes, it WILL help reduce engine wear...at the co$t of battery replacements.

[2000mc]

Originally Posted by Big time

It is said that most of the engine wear comes from cold starts when the oil is in the pan and the metal parts grind themselves dry.

If OEM automakers were to adopt them, Would they allow closer engine tolerances thus improving engine efficiency while reducing emissions?

block heater, oil pan heater, and more oem's seem to be going to 0w20 already

[freebeard]

oil pressure accumulator - Google Search

[oil pan 4]

F1 and some other race engines need to be pre warmed because the tolerances are so much tighter than street engines that if they were cold started the engines would seize from oil not being able to flow through the tight spaces.

Large ship engines are pre warmed too.
The ship engines and race cars normally use accumulators to move the oil before start up.

Warm starting seems to be more important to wear prevention than pre lube.
Also using block a heater has proven to save fuel.

Dont use 0w or 5w-20 oil unless you are looking for more engine wear.
There is a 1% fuel economy difference between 5w-20 and 10w-30 weight oil. The wear difference between the two is much more than 1%.

[2000mc]

i didnt mean to suggest just start using it, i mean oems are building more of their engines designed for 0w20

[oil pan 4]

Yeah I still dont use it.
They can call for it all they want, not happening.

[Cobb]

Id rather grid the starter before I had oil psi before the engine fired up. Thats how my riding mower works with a honda low oil sensitive engine. Last witer it cranked for 30 seconds before it fired up. I dont think spinning the parts around with no combustion is going to cause that much wear vs it running with no oil psi.

[freebeard]

With a separate push button you could gri[n]d the starter, and then use the key to fire it up.

[redpoint5]

Originally Posted by oil pan 4

Yeah I still dont use it.
They can call for it all they want, not happening.

What do you run?

I use 10W-40 synthetic in the motorcycle and 10W-30 synthetic in the cars. It was my wild guess as to the right balance of fuel economy and long term engine protection, given my extended drain intervals.