5/30 v 10/40 oil

Harold 4x4 · Jan 2, 2016

Hi all, and a late HNY.

Made a dumbo mistake by putting 10/40 oil in my Discovery 2 which now sits ( broken down, exploded top rad hose) On a garage forecourt 500 kms away.

Is it likely, or possible that the change of oil from 5/30 to 10/40 could have catastrophic results?

Thor1950 · Jan 2, 2016

Hell no

Dippypud · Jan 2, 2016

Harold 4x4 said:
Hi all, and a late HNY.

Made a dumbo mistake by putting 10/40 oil in my Discovery 2 which now sits ( broken down, exploded top rad hose) On a garage forecourt 500 kms away.

Is it likely, or possible that the change of oil from 5/30 to 10/40 could have catastrophic results?

Not really, 10W-40 would be better for Spain rather than UK ...
This gives simple oil bumf ... http://www.usedcarexpert.co.uk/cars/advice/what-oil-for-your-car-/1009/

Harold 4x4 · Jan 3, 2016

Dippypud said:
Not really, 10W-40 would be better for Spain rather than UK ...
This gives simple oil bumf ... http://www.usedcarexpert.co.uk/cars/advice/what-oil-for-your-car-/1009/

Seems to be a problem with that link...

I can't find anywhere that recommends using 10/40 in a td5 engine, and as I've done a complete oil change with it I'm wondering if that has aggravated the problem with my Disco

flat · Jan 3, 2016

Not likely to cause an exploding top hose. 5/30 to 10/40 isnt a huge jump in viscosity

jamesmartin · Jan 3, 2016

Harold 4x4 said:
Seems to be a problem with that link...

I can't find anywhere that recommends using 10/40 in a td5 engine, and as I've done a complete oil change with it I'm wondering if that has aggravated the problem with my Disco

it wont have ,top hose has exploded either because it was weak /damaged of system has over pressurised,nothing to do with 10/40 oil

wammers · Jan 3, 2016

Harold 4x4 said:
Seems to be a problem with that link...

I can't find anywhere that recommends using 10/40 in a td5 engine, and as I've done a complete oil change with it I'm wondering if that has aggravated the problem with my Disco

Try looking in the owners hand book.

Harold 4x4 · Jan 3, 2016

Ha, ha, ha.... Yes, I thought I had seen that in the book, but since my brain isn't working quite the same anymore I had serious doubts

gazman · Jan 3, 2016

No it won't make any difference. You use different viscosity oil for different temps. In cold weather thinner oil is used as it is runner when cold and doesn't wear the components as much during cold start and running. Vice versa thicker oil in hotter climates as oil thins when hot.
So thicker oil in Spain should not be a problem.
IMO the hose has just failed as the other posters have said

5/30 v 10/40 oil

Harold 4x4

Active Member

Thor1950

Well-Known Member

Dippypud

Never Knowingly Understood

Harold 4x4

Active Member

flat

Well-Known Member

jamesmartin

Well-Known Member

wammers

No longer with us, RIP

Harold 4x4

Active Member

gazman

Well-Known Member

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