F1 News, Views and Reviews

McLaren Green Fluid Mystery Solved

There was great mystery yesterday at testing in Spain, mainly involving Hekki Kovalainen’s McLaren MP4-24 and a large amount of green fluid splattered all over the car.

Was it oil hitting that chrome paint work?  Or indeed had someone put too much brake fluid in?  Or was it McLaren’s new “green” image?  Well, we were all stumped.  Until, ESPN were told by McLaren officials that it was a special liquid placed onto the car to help with the aerodynamics.

Basically, they put it on, and before it gets chance to dry the car is flying around the circuit.  As it does so, the air flow across the car moves the paint around, where it subsequently dries and shows the mechanics detailed air flows across the car.  It is common practice to confirm wind tunnel findings.

“This is what we call a ‘flow vis’ (visualisation) – where we take a paraffin-based light solution and apply it to the car,” A McLaren spokesperson told ESPN F1-Live

“The solution is light enough to flow over the car, drying quickly to determine the airflow over the bodywork.”

McLaren Mp4-24, with the green fluid evident behind the front wheels and at the base of the sidepod

McLaren Mp4-24, with the green fluid evident behind the front wheels and at the base of the sidepod

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