Thread: Oil Consumption V8

how much oil are you using per how many km?

roughly 500ml per 500 km - so 1.0 litres per 1000km - but I'm doing an exact consumption test at the moment

needs to be a zinc oil regardless of brand,

not sure I'd run a 20w in Melbourne,,

I would have run the oils the other way round,, hmm.

I'll use a lower weight in winter - has been 35 + out in the hills down here!

I wouldnt use semi or synthetic oil in a new engine. There are plenty of "running in" oils. Might be worth putting in an engine flush in then draining the oil out and giving a running in oil a try. There's also a fair bit written on how to run in an engine. General rule is dont be too kind to them, can lead to glazed bores = oil consumption.

No saying this is the best oil but has some interesting reading on the page. Penrite Oil - A Better Class Of Oil

Dave

My two RV8s (3.9 and 4.6) hardly use any oil at all.
Don't run in a new engine on anything synthetic, especially a flat tappet old school engine with large diam oil galleries.

I suggest running it in with something cheap and basic like KMart brand oil to bed the rings in properly - that's what my local engine builder recommends (Chris Milton Race Engines).

Then after 800 to 1,000 km dump the oil and move onto something like Gulf Western 20W/50 which is made for older pre 2000 engines and still has a reasonable component of zinc in it for the sake of your cam/lifters, etc.

We use a dedicated running in monograde 30 oil for 1500km then a 15w40 mineral like shell rimula (yes it is a diesel spec but has great detergents and is overspec for old school engines petrol and turbo diesel) . I would expect no more than 1l per 5000km consumption.

Jc

Thanks everyone for the advice. The car got a good caning yesterday up Andersons Track at Gembrook. It is due a GB/TC/diff oil change so will dump the engine oil at the same time and switch to G&W.