On my 2012 R56 Cooper S when it has had oil changes I've used Castrol Edge 0W-30 or 5W-30.

The car is due an oil change and my plan is for it to be done when I get the JCW spec turbo fit and numerous other mods.

I've been looking at Liqui Moly. I've never used it before so contacted Liqui Moly to ask what they suggest I use. They suggested using Leichtlauf High Tech 5W-40 and Cera Tec. They also recommended using their Pro-Line Engine Flush.

Has anyone used this combination, especially the Cera Tec?

The car has done 53,000 miles. It is to be used for fast road/track/Nordschleife Touristenfahrten, but also needs to be able to be used on a daily basis if/when required (even during the winter). Plan is for it to be around 250bhp when the turbo is fitted.

 

Dunno about the oil, but I would NOT use engine flush.

The thing about engine flush is that if you don't have any significant sludge, you don't need it. But if you *do* have significant sludge, the flush can break it free, plug up your oil pickup, and kill the engine. The latter happened to a buddy of mine on his Miata.

If you've got sludge in the engine it needs to be either left alone or cleaned out properly IMO.

 

Ligui Moly is good stuff. If you want to flush the engine safely just follow the directions on a can of sea foam. Put it in the oil, drive for 10 minutes and drain the oil. I do this every third oil change. Got 90,000 miles on the wee beastie and he only uses 100cc of oil between changes.

 

What's the difference between sea foam and Liqui Moly type engine flush?

 

About $10.00 in your wallet