Colin Turkington and Rob Collard lead the way for BMW in a wet first BTCC practice at Oulton Park.
Turkington was ultra impressive in the greasy conditions to go nearly a second faster than his team mate Collard around the Cheshire circuits longer International configuration.
Collard, in turn, was three tenths ahead of MG' Jason Plato who arrives into this fourth weekend of championship brimming with confidence despite a disappointing Thruxton round.
Marc Hynes in his Triple Eight MG6 followed Plato in fourth while Audi's Rob Austin trailed Hynes by six-hundredths of a second on the almost two-minute Oulton lap.
Gordon Shedden was the top Honda in sixth just ahead of championship Andrew Jordan who ended FP1 around the sixth position the Pirtek man predicted prior to the weekend.
Sam Tordoff, Alain Menu and Nick Foster completed the top ten running in eighth, ninth and tenth all within half a tenth of each other's time but two-seconds off Turkington's lightning pace.