9YaTaH wrote:
drmini in aust wrote:
Normal oil pressure (hot & revving) on most Minis is around 60psi, Cooper 70psi. I'd say on an old motor 50 is OK, if it gets down to 40 the bearings or pump are on the way out.
Idle pressure- anything over 20psi is OK. Depends what grade oil and how hot it is...
Autos (even old ones) should be around 60-70psi hot- they have a humungous pump, compared to all others..

Doc, oil IS the best mechanic. I cannot understand how mfrs can recommend 10,000 km intervals with modern engines (synthetic ...maybe).
However, engine reconditioners sometimes recommend 500-1000 kays with a lighter "flushing oil" AFAIR.
Whats your take on this one???

I do change the Laser's oil at 10K intervals, but hey, it's still got a little colour in it. And it doesn't get thrashed into little bits by the gearbox..
On rebuilt motors yeah, dump the oil (and filter) after 500 km or so. And just use cheapo oil up to then, even supermarket 20w/50 is OK.
Valvoline do a running in oil- it's OK for this too.
Don't use oil with additives for the first 1000 miles at least, you want things to bed in properly....
20W/50 is the best all round grade but use well known brands.
As for oil additives- Nulon, Bardahl, STP, Wynns, Molybond etc, no I don't believe in them- not for Mini boxes anyway.
If motor is that worn out it needs them, pull it down and fix it!

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.
