david - could that be why it only overheats after 20 mins of driving? Does it take 20 mins for the coolant to reach full temp?

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1987 300D, 212,000 miles
1997 Ranger, 300,000 kms
2004 Honda Civic Si - 110,000 kms. FOR SALE
2004 Mazda 3 Sport - GF's car, but it's my problem....

Montreal, Quebec - The Rust and pothole capital of North America!