Freshly Rebuilt Engine.. Oil Use

[benz_200t]

i think the motorman trick did work...

year 2000,i trashed a brand new car that has not seen 1000 km.(brand new sister's car)

taking it to the rev line every time in every gear.

and now the engine is still running perfectly and without any rebuilt since the day we bought it.

back here in my hometown, usually the mechanics ask us to run in with mineral oil for 500km's and then another change using mineral oil for another 2000 km's. only after that, returning back to use synthetic oil.

but we didnt opened the engine to check if the technique really worked.

[R31Nismoid]

Oh very interesting to hear, I've not heard of any engine builders around here using that method, especially with synthetic and not a mineral oil, I wasn't sure if it was a tried and true thing or one of those things that was done by one or two people and then argued on the forum as an opinion point!

Fair enough to go on what your builder says, most of my mates use EDGE and i've seen an RB30 with just under 500 000km unopened, with Castrol synthetics used nearly its entire life (mind you thats also a motor which wasn't thrashed). Thought that it may have had a detrimental effect when the car's being driven to its potential, due to breakdown of stabilising additives in the oil (due to it apparently being a hydrocrack derivative and not a 'true', synthetic.

But then over how many km's? (this poses an interesting question)

If your swaping every 5,000-8,000km's does it breakdown enough? Or is that only over longer service intervals and so on.

There are lots of variables if you wanna dig into it all IMO

[bozodos]

Well from rereading a couple of pages in the oil thread, I'm guessing that visual signs such as fuel dilution and consumption of oil (you'd be hoping that would be minimal in a new motor though!), and if you're anal about it, a used oil analysis?

I don't know of anyone who changes their oil over 5000km either, I was of the understanding that only newer engines such as the LS family of motors could go for 10000 vs 5000km changes.

[R31Nismoid]

I think anyone asking for above average/high performance of a motor well above its factory specification should be changing oil frequently.

[Swiper the Fox]

I think anyone asking for above average/high performance of a motor well above its factory specification should be changing oil frequently.

I change mine after every race meeting....cheap insurance. Actually its not that cheap $250 a change...but better than a costly rebuild.

[Weapon]

Thats a good point ^^^^

With such a developed engine its the only thing to do

Mine being a daily it gets service every 5000-7500km