How long before engine oil is fully warm (petrol & diesel)?

[CABC]

oils and engines are much better since the fifties and oil will flow to all areas quite quickly nowadays. i would think a key consideration is metal expansion - how long does it take for key parts to have expanded to operating size?

20 mins before full wot sounds too old school. with no actual facts to back it up i go for:
- few seconds idle
- 5 mins easy driving
- 5 more minutes avoiding high load
- enjoy
- avoid switching off too quickly after a good thrash. couple minutes air flow with no load

happy to hear informed views on above.

[Exige77]

CABC said:

oils and engines are much better since the fifties and oil will flow to all areas quite quickly nowadays. i would think a key consideration is metal expansion - how long does it take for key parts to have expanded to operating size?

20 mins before full wot sounds too old school. with no actual facts to back it up i go for:
- few seconds idle
- 5 mins easy driving
- 5 more minutes avoiding high load
- enjoy
- avoid switching off too quickly after a good thrash. couple minutes air flow with no load

happy to hear informed views on above.

I think most sensible people would advocate the above.

Not sure anyone is advocating “babying” their engine.

[Petrolsmasher]

Exige77 said:

CABC said:

oils and engines are much better since the fifties and oil will flow to all areas quite quickly nowadays. i would think a key consideration is metal expansion - how long does it take for key parts to have expanded to operating size?

20 mins before full wot sounds too old school. with no actual facts to back it up i go for:
- few seconds idle
- 5 mins easy driving
- 5 more minutes avoiding high load
- enjoy
- avoid switching off too quickly after a good thrash. couple minutes air flow with no load

happy to hear informed views on above.

I think most sensible people would advocate the above.

Not sure anyone is advocating “babying” their engine.

Pretty sure most people are advocating babying their engine.

[Exige77]

Petrolsmasher said:

Exige77 said:

CABC said:

oils and engines are much better since the fifties and oil will flow to all areas quite quickly nowadays. i would think a key consideration is metal expansion - how long does it take for key parts to have expanded to operating size?

20 mins before full wot sounds too old school. with no actual facts to back it up i go for:
- few seconds idle
- 5 mins easy driving
- 5 more minutes avoiding high load
- enjoy
- avoid switching off too quickly after a good thrash. couple minutes air flow with no load

happy to hear informed views on above.

I think most sensible people would advocate the above.

Not sure anyone is advocating “babying” their engine.

Pretty sure most people are advocating babying their engine.

Can you point out where ?

[Petrolsmasher]

Exige77 said:

Petrolsmasher said:

Exige77 said:

CABC said:

oils and engines are much better since the fifties and oil will flow to all areas quite quickly nowadays. i would think a key consideration is metal expansion - how long does it take for key parts to have expanded to operating size?

20 mins before full wot sounds too old school. with no actual facts to back it up i go for:
- few seconds idle
- 5 mins easy driving
- 5 more minutes avoiding high load
- enjoy
- avoid switching off too quickly after a good thrash. couple minutes air flow with no load

happy to hear informed views on above.

I think most sensible people would advocate the above.

Not sure anyone is advocating “babying” their engine.

Pretty sure most people are advocating babying their engine.

Can you point out where ?

every post that says they drive 20 minutes, or 10 miles at motorway speeds before planting it

[pills]

BMW 335D engine upto temp (oil temp gauge on dash) approx 7-10 mins / 5 to 7 miles of driving.

[VeeFource]

No one's saying your engine is going to explode if you don't let it warm up. It's about reducing wear which helps prevent losing horsepowers and some fuel efficiency as the miles go by.

Edited by VeeFource on Sunday 19th May 15:22

[Condi]

VeeFource said:

No one's saying your engine is going to explode if you don't let it warm up. It's about reducing wear which helps prevent losing horsepowers and some fuel efficiency as the miles go by.

Have you got any proof of this?

The Top Gear rolling road tests were generally done on unserviced cars, and from memory some new oil, spark plugs etc returned much of the performance. I would think with a modern engine you would see little difference between a brand new motor and one with 150k on, provided they had been serviced in line with the book. Certainly I've never noticed much change in performance or economy as cars age.

[deltashad]

Start engine. Cigarette. Commence 5 min drive to mcd drive through. Collect coffee. Another 3 mins down a few slurps. Keep the plastic cover on. GL.

[VeeFource]

Condi said:

Have you got any proof of this?

The Top Gear rolling road tests were generally done on unserviced cars, and from memory some new oil, spark plugs etc returned much of the performance. I would think with a modern engine you would see little difference between a brand new motor and one with 150k on, provided they had been serviced in line with the book. Certainly I've never noticed much change in performance or economy as cars age.

I don't have data on it. But increased engine wear can't help with those things can it?

[Condi]

Just to dig this thread up slightly....

Watching the MotoGP this morning, and I notice that the bikes are started up then go straight out on track. The rider is already on the bike, and then they set off immediately down the pit lane. I doubt the oil is pre-warmed, and so Triumph/Honda etc must be pretty happy to have 30+ cold engines being pushed hard from cold, and engine failures are incredibly rare, almost unheard of these days.

[Krikkit]

Condi said:

Just to dig this thread up slightly....

Watching the MotoGP this morning, and I notice that the bikes are started up then go straight out on track. The rider is already on the bike, and then they set off immediately down the pit lane. I doubt the oil is prep po-warmed, and so Triumph/Honda etc must be pretty happy to have 30+ cold engines being pushed hard from cold, and engine failures are incredibly rare, almost unheard of these days.

The bikes will have been pre warmed by the mechanics before the rider gets anywhere near them.

[A900ss]

Krikkit said:

Condi said:

Just to dig this thread up slightly....

Watching the MotoGP this morning, and I notice that the bikes are started up then go straight out on track. The rider is already on the bike, and then they set off immediately down the pit lane. I doubt the oil is prep po-warmed, and so Triumph/Honda etc must be pretty happy to have 30+ cold engines being pushed hard from cold, and engine failures are incredibly rare, almost unheard of these days.

The bikes will have been pre warmed by the mechanics before the rider gets anywhere near them.

And they have a few engines to last less than 20 races.

I’d be disappointed with the engine in my if it did sub 1k miles before needing a rebuild.

Apples and oranges.

PS - just checked and they get 7 engines to do 19 meets.