yesterday i drove down to montreal from ottawa...a two hour trip....when i reached montreal, the engine began to idel as if it was out of breath....it hard to explain...the oil presure gauge would move up and down with idel....it kinda of sounded like a low WOOOO WOOOOO WOOOO what could be the problem....the car has 92,000kms run like great in the city and highway no problems...thanx all those that reply