Thread: Issues with changing oil types...

Pretty much an old wives tale, the boffins in white coats make sure an oil is neutral to seals before it's released.

Most lubes these days are so mixed up in their chemistry anyway no one really knows where a mineral oil ends and a syn begins.

Stick with the HPR Diesel 5

Giving excellent results in the TD5s according to a 'source' I spoke with

And saves quite a bit of $$$$$$$$

Thanks Rick... appreciate the info...


Mike... the problem is that i have access to the penrite hpr and the mobil fully sythetic at more or less the same price so money isnt saved... but i dont know if i would gain anything either!

Steve

Originally Posted by 5teve

Thanks Rick... appreciate the info...


Mike... the problem is that i have access to the penrite hpr and the mobil fully sythetic at more or less the same price so money isnt saved... but i dont know if i would gain anything either!

Steve

Lets just say I believe your motor will be happier on HPR D5...

I've never seen bad reports from it, but have heard of wear on cam lobes etc running the M1

Originally Posted by Tombie

Lets just say I believe your motor will be happier on HPR D5...

I've never seen bad reports from it, but have heard of wear on cam lobes etc running the M1

That makes 2 of us Mike. I have seen a worn out cam on a 2000 Defender after 120K, using M1 5W from day one.

JC

Worn cam lobes. Is this the case with all brands of synthetics?

If so, guess I better change over sooner rather than later.

Have had my TD5 on 0w-40 since 20k, with 118k on her now.

I shouldn't read this stuff, really.

Originally Posted by Rimmer

Worn cam lobes. Is this the case with all brands of synthetics?

If so, guess I better change over sooner rather than later.

Have had my TD5 on 0w-40 since 20k, with 118k on her now.

I shouldn't read this stuff, really.

No.

IIRC the one JC saw used M1 5W-30.

It could have been a metalurgy issue, but more than likely a lack of EP additives in the lower viscosity M1's, particularly if it was a ILSAC GF-4 spec oil, which is more concerned with drag reduction within the oil and low phosphorous levels to minimise cat contamination.

OW-40 M1 should be fine, it's tailored to Euro engine specs. including light diesels, not US engines.

If you want to run a Mobil syn oil in a Land Rover diesel I'd use Delvac 1, but AFAIK there's nothing wrong with Penrite and the last time I spoke to someone that really knew oils from lots and lots of oil testing in a lot of different engines there's a lot right with it

It's actually Castrol 0w-40 I use. Meets all the specs you mentioned.

Cheers for the detailed explanation.