I bought my M5 in July 2020, by September I was losing half a liter of oil every 1,000 kilometers and my undertray was spoiled in an oddly specific pattern.
The oil cooler was cracked.
I rushed a replacement OE unit for a quick fix. I've sinced swaped to a higher temperature thermostat and revisiting the V10's coolant needs.
In this Special Series, I document the original failure points of the OE unit, my unboxing impressions of this improved oil cooler along with installation notes.
- Matt / @m3_epoustouflant
No more cracks.
No more leaks.
Resilience through increased capacity [...]
and improved air flow.
It's black, just like OEM.
The oil cooler fits with OEM hardware. It's a bumper off affair - get ready to spill some oil. Have a jug nearby to replenish or plan a full oil change.
Radtec is a well-known name throughout all forms of vintage and classic motor-sport and claims to be the largest manufacturer of bespoke built classic aluminium radiators in Europe.
They've most notably been assigned the OEM contract for Koenisseg.
Cooling is in their family bloodlines: they have been supplying the classic car market for over thirty years.
They've been expanding their BMW M offerings as our cars age. I'm eager to see what more we can bring to market together.