Volvo 1998 S70 non-turbo
Three months ago, the Volvo dealer replaced the original radiator with a new one.
Two months ago, I had the original cylinder head repaired with new valves, hydraulic lifters, valve stems seals and a new head gasket[water pump seized, broke the timing belt which caused the bent valves]. The independent Volvo specialists garage said the head was flat so no machine work. I have been keeping an eye on the pressurized overflow tank with a new 22psi overflow cap.
Last week, another garage flushed the cooling system, pressured checked it, no chemicals where needed and filled with Peak Global Gold Lifetime which was last Friday(7/25). On Saturday, I added about 12oz of Peak to the level mark. Every nite after a 2hr cooled down, I noticed the overflow tank level never really moved up or down. So tonite, I opened the pressurized cap, looking for any signs of oil or discolorization. So far so good and put the cap back on. The antifreeze level was the same level as previous nites. Next, I opened the oil cap on the engine.
When I did this the coolant level rose in the overflow tank. I removed about 8oz to get the level back to the original Saturday level mark. Can someone explain why the level rose again? Is this a head gasket leak issue? Do I need to be concerned?
Thanks
Three months ago, the Volvo dealer replaced the original radiator with a new one.
Two months ago, I had the original cylinder head repaired with new valves, hydraulic lifters, valve stems seals and a new head gasket[water pump seized, broke the timing belt which caused the bent valves]. The independent Volvo specialists garage said the head was flat so no machine work. I have been keeping an eye on the pressurized overflow tank with a new 22psi overflow cap.
Last week, another garage flushed the cooling system, pressured checked it, no chemicals where needed and filled with Peak Global Gold Lifetime which was last Friday(7/25). On Saturday, I added about 12oz of Peak to the level mark. Every nite after a 2hr cooled down, I noticed the overflow tank level never really moved up or down. So tonite, I opened the pressurized cap, looking for any signs of oil or discolorization. So far so good and put the cap back on. The antifreeze level was the same level as previous nites. Next, I opened the oil cap on the engine.
When I did this the coolant level rose in the overflow tank. I removed about 8oz to get the level back to the original Saturday level mark. Can someone explain why the level rose again? Is this a head gasket leak issue? Do I need to be concerned?
Thanks
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