Thread: oil for a V8?

Following the advice of the local LR repairer ( not dealer ) and Penrite
themselves, I use HPR diesel 15 in my V8i !
More than satisfied.
Cheers.

interesting Robert,,,

Originally Posted by Pedro_The_Swift

should of looked at the avatar Jasper110,,
maybe add your location??

sorry about that. done now!!

(ps. the pics from my summer hols in Norway)

Just a tip...never ever use synthetic in these engines, or any old engines for that matter. Big clearances mean thin oil doesnt get pushed all the way through the engine.

My first rangie had a 4.3 stroker engine in it. The fool who previously owned it had Caltex synthetic oil in it (he also did a few other stupid things with it, like 100% coolant concentrate in the cooling system).

Anyway, driving it home from Sydney it threw a big end bearing which f***ed the crankshaft beyond repair. So I missed out on the joys of a 4.3 stroker engine (as you can't get those cranks anymore).

Luckily I managed to pick up a 3.5 short motor from a Discovery for $200. So I put the stroker cam in it and it went like a rocket. Revved right up to 6500.

my 84 rr has a 4.4 layland p76 fitted not sure wats been done to it but it aint std it's been in grumpy nearly 10 years and ive had itfor the last 18 months and i use penrite hpr 50 and have done in previous cars and it out performs any other oils the 4.4 is getin tired now but it only puffs oil when its workin hard so im happy with it
cheersnbeers 4 now


chris...

Originally Posted by timberwolf_302

Just a tip...never ever use synthetic in these engines, or any old engines for that matter. Big clearances mean thin oil doesnt get pushed all the way through the engine.

My first rangie had a 4.3 stroker engine in it. The fool who previously owned it had Caltex synthetic oil in it (he also did a few other stupid things with it, like 100% coolant concentrate in the cooling system).

Anyway, driving it home from Sydney it threw a big end bearing which f***ed the crankshaft beyond repair. So I missed out on the joys of a 4.3 stroker engine (as you can't get those cranks anymore).

Luckily I managed to pick up a 3.5 short motor from a Discovery for $200. So I put the stroker cam in it and it went like a rocket. Revved right up to 6500.

Strewth, why do these myths perpetuate ?????

The oil didn't cause your big end failure, and definately not the type of oil !
an oil of a given viscosity range, eg xW-40, is in the same viscosity range when hot, eg most xW-40 diesel oils are around 14-15 cSt @ 100*C (a Centistoke, the measure of a fluids viscosity above approx 0*C) regardless of whether they are mineral, fortified, semi-synth or one of the different types of synthetic.

Originally Posted by jasper110

even in a V8?

why not ?

Most all diesel oils are mixed fleet rated, and as I said before, thay are a much more robust oil than most nearly all petrol type oils.
Use something with a spec at least CH-4, with CI-4 and CI-4+ oils being the latest in diesel oil technology.
IIRC, the ACEA sort of equivalent is B5.
If you are worried about cold start performance where you are go for a semi-synth with a 5W or 10W rating, much easier cranking for the engine starter motor in thoose sub zero temps.
FWIW, a few of the boys on the Pommy boards swear by Millers semi-synth over there.

As to why the obsession with Penrite on this board....
I prefer oils from the major players. I used Penrite twenty years ago and just don't buy into this "thicker is better" mentality anymore. I use oil analysis to see what works and what doesn't, and use an independent analysis expert to interpret the results.

Originally Posted by rick130

Strewth, why do these myths perpetuate ?????

The oil didn't cause your big end failure, and definately not the type of oil !
an oil of a given viscosity range, eg xW-40, is in the same viscosity range when hot, eg most xW-40 diesel oils are around 14-15 cSt @ 100*C (a Centistoke, the measure of a fluids viscosity above approx 0*C) regardless of whether they are mineral, fortified, semi-synth or one of the different types of synthetic.

Quite true, and to add to that point 'most' synthetics have a much flatter temp/viscosity line than mineral and semi's, which means regarless of whether it's hot or cold it's much closer to the original viscosity, and therefore more stable.