Default Will Thinner Oils Damage Your Engine?

Naks

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They probably also had a stroke when they saw the 20 000 km service interval... unless Land Rover reduced it for that version of the Puma engine.
no, it was 20Kkm/1 year. I have been doing oil changes every 6 months on mine since new, engine still going superbly after 10 years, and with a remap.

the new Defender is 2 years/26,000 interval IIRC
 

TEXTILE GUY

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As is always suggested, stick to recommended oil specifications and you won't have any issues, I have never understood why people want to fiddle with different oil specifications.
What I find funny - chap buys a chariot for R10 000

1596125083420.png1596125173515.png
Spends R550 000 to get this

1596124979082.png1596125181300.png

Looks awesome, but its still a POS .....

Could have bought a new car with all the cash spent make the old piece of junk look expensive .....................
 

Neuk_

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What I find funny - chap buys a chariot for R10 000

View attachment 884034View attachment 884036
Spends R550 000 to get this

View attachment 884028View attachment 884038

Looks awesome, but its still a POS .....

Could have bought a new car with all the cash spent make the old piece of junk look expensive .....................
Different strokes and all that, I wouldn't spend that amount of money on a Type 1 Beetle, perhaps a T1 Bus if it was the right Bus and I certainly would on a 356 as they easily fetch over R1m these days.
 

Nicholas Lisse

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Jeep 4.7 V8 needs 05-W30 when new. that was 2003.
With 270 000 on the clock the engine loosened up a bit, as old engines do.
And 05w30 being hen's teeth and bloody expensive, i went to 15w40.
THe first 10 seconds of startup the 05W30 sounded smotther and quiter.
But after that, especially when warm the 15W40 have the engine smoother and more quiete.
BUt this is based on a Jeep 4.7 V8 17 years old, Not a spanking brand new car. in 203 the engine had fine tolereances, not so much anymore. and not by today's standards.

Keep in mind a thicker oil cannot fill all the spaces a thinner oil can reach.
My humble 5c.
Running 15W40 on the Powertech V8 is going to cause more harm than good, in the long run. Try 10W40. It’s what I run in my 4.0.
 

dj_jyno

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no, it was 20Kkm/1 year. I have been doing oil changes every 6 months on mine since new, engine still going superbly after 10 years, and with a remap.

the new Defender is 2 years/26,000 interval IIRC
OK, cool, so it is the same interval as the Puma engine in the X-Type, then.

Think the new Defender is 2 years / 32 000 like the Jaguar XE.
 

SauRoNZA

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Yes, It's actually much better now, it used to drink like a fish, but it's an old car so I can take calculate risks and try things, don't do it on your new car.
It makes sense to change oil over time as engines age.

An engine with 200,000km on is most certainly not the same as one with 0.

I would however expect it to go thicker, not thinner.

Of course if fiddling means going from mineral to fully synthetic oil that’s a different story.
 

Neuk_

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Running 15W40 on the Powertech V8 is going to cause more harm than good, in the long run. Try 10W40. It’s what I run in my 4.0.
Why? Assuming the specifications of the oil are the same, the only difference between the two is the cold temperature viscosity, which isn't that big of a change from 15W to 10W.
 

Flarsiep

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Why? Assuming the specifications of the oil are the same, the only difference between the two is the cold temperature viscosity, which isn't that big of a change from 15W to 10W.
My question as well. from 10 to 15 is a low jump. and we do not get that cold temperatures in the western cape.
ALso, if you run th e4.0, that is th estraight six right? worlds apart motoring wise. You have the Jeep motor, i have the Chrysler motor.
Would really like to know your reasoning. thanks for warning in any case.
 

Neuk_

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My question as well. from 10 to 15 is a low jump. and we do not get that cold temperatures in the western cape.
ALso, if you run th e4.0, that is th estraight six right? worlds apart motoring wise. You have the Jeep motor, i have the Chrysler motor.
Would really like to know your reasoning. thanks for warning in any case.
If that is the 4.0 straight 6 I am thinking of you could probably run old chip frying oil in it :ROFL:
 

thechamp

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It makes sense to change oil over time as engines age.

An engine with 200,000km on is most certainly not the same as one with 0.

I would however expect it to go thicker, not thinner.

Of course if fiddling means going from mineral to fully synthetic oil that’s a different story.
From 20W50 to 10w40, so thinner, not too sure but I think it's part synthetic. No issues so far, just enjoying the break from the fuel pumps.
 

Moosedrool

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As is always suggested, stick to recommended oil specifications and you won't have any issues, I have never understood why people want to fiddle with different oil specifications.
Because some people think they know more than the mechanical engineers who designed and built the engine block.
 
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