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No, it just says that all warranty, actual or implied, is invalid unless it has been used with a 100% synthetic ester-based oil from Day One.

BTW, how long between changes of these fine oils? I'm thinking of every 5000 miles.

I have been using Silkolene Pro-S 10w/50 for a while and am now thinking of trying Motul 300v Competition 15w/50. I'm an 'oil novice' and just fancy a change for the helluvit! The car has a Rover 620ti engine, hybrid turbo with roller bearing, runs about 275bhp and 280lbft torque with forged...

Anyone able to confirm this?

Now had a chance to do more research on this. It seems that it uses more oil at a low speed than when giving it serious right-foot-down action. I did a hard-ish 250-mile run over the weekend and it used very little but after a slow-ish 60 miles about a week ago, it used about 100cc! Strange...

Ikeep, this is something that I had considered a while back. I took it out last night and the performance is certainly there but I did notice signs of 'exhaust blow' when the loud pedal hit the floor. I have a couple of good engineering friends with far more knowledge than I. They agree that...

Thank you all. Mazduh30, I will have a leakdown test when I next visit my engine management guy in a couple of weeks. If it is the head then this will be done but this was part of the rebuild. It was skimmed 18-thou and rebuilt with a bit of mild polishing and new tri-metal steel gasket...

I'm in the UK, this is my first posting so a big 'hello' to everyone across the pond. I have recently had my 2-litre 4-cylinder Rover engine rebuilt to a fast specification with uprated components. This was run in correctly on mineral 20w/50 oil, changed after 20 miles, then Millers running-in...