There's only one type of aluminium.

We're talking about the effect of chemicals on aluminium, not the longevity or design qualities of engines, cooling systems or radiators.

I'm no scientist, but I would imagine that a coolant that is suited to one type of aluminium engine will also be suited to others.

Many M-B service agents obviously hold this view too, otherwise they would automatically prescribe M-B proprietary coolant - but many don't.

I stick to all the suggested fluid change intervals and service schedules. My radiator has just been flushed at 289,000km (180,000 miles) and it's fine. A bit of gunk came out, but not much.

I've never had a cooling, temperature or internal corrosion problem.

If my agent said, "Use only M-B coolant," I would, but they don't. So I'm interested in hearing how a coolant designed solely for M-B alu engines can be significantly better than a premium brand coolant designed for alu engines in general. Especially when the oil made by the generic brand is frequently recommended for use in M-B engines!

Cheers