I have two different things you can use both of which I personally have tried so I can say they work! The first and more expensive is GUNK. In the States it is in any large auto store. The second and my personal favorite is any cheap brand of oven cleaner. It will work just as well as Gunk and is much cheaper and even smells better. Both are dangerous to skin and eyes and you must flush with plenty of water. In some areas the residue is considered hazardous waste and must be disposed of properly. Both will remove light grease and oil. If it is a heavy build-up use a putty knife then spray with the cleaner and wait a couple of minuetes then use a stiff brush before rinsing off. The aluminum will brighten up nicely. Make sure to thoughly rinse off all traces of cleaner and don't get it on yourself. If you have access to one, a steam cleaner with a brightener for aluminum will do the job more professionaly especially if you have a lot of very dirty parts. Look in the phone book for someone who cleans the filters for the ovens for restaurants, they will go to the job and do it right in the spot. Another place would be to go to a transmission shop, many have large parts washers where they put a whole transmission case into like a giant dishwasher. Buy the guys lunch and they will clean everything in sight! David Teitelbaum vin 10757 --- In dmcnews@xxxx, "ian" <ian@xxxx> wrote: > Hi DMLers, > > I'm switching engines in my right-hand-drive DeLorean, using the 28k mile > unit from my parts-DMC. Has anyone any recommendations for cleanig the > aluminium engine block to get her sparkling again! > > Any suggestions would be appreciated. > > Cheers, IAN > ***************