thnx sa response treborhon. Wala naman leak ang overflow container. Walang noticeable leaks anywhere when left parked overnight.

At any rate, masakit sa bulsa pero oks na ang ride ko. Salamat sa lahat ng nag respond sa thread.

Eto po summary for reference purposes:

Problem: Radiator overflow container not returning water to radiator. Temp hitting high. Loosing water on Rad. Several long drive incidents hit the 3/4 mark which alarmed me to have it checked by a mechanic.

Cause/Diagnosis: Pressure build-up on cooling system. Rad is filled up with air/gases coming from engine and fills up overflow container. Rad hoses are hardened after few minutes of driving. Bubbles on the rad opening.

Culprit: Cylinder Head, Cylinder Head Gasket

Resolution/Cost:
1. Top overhaul labor / 3,000
2. Replace Cylinder Head Gasket / 1,800
3. Machine shop works e.g. hyro/crack test, cyl head resurface, valve guide reface etc. / 3500
4. ReplaceValve seals and related parts / 2,500
5. Calibration and replace faulty injector tips / 4,500
6. Change engine oil, ATF, 30% coolant / 2,500

Testing / Results:

Day 1 Testing: Drove for 75kms, Driving condition; afternoon, highway and few traffic
Result: Water on Radiator and Overflow container were not consumed even a bit.

Day 2 Testing: Drove for 246kms(Tarlac-Alaminos-Sta Cruz Zambales), driving condition; hot summer condition b/n 8am and 4pm, 2 x 30min stop overs, moderate to heavy traffics, 4 to 6km off-road detour.
Result: Water/Coolant on radiator was not consumed. Overflow container consumed about 100-150ml. .

Day 3 Testing: Drove for 200kms(Sta Cruz Zambales-Subic-Pampanga), driving condition; hot summer condition b/n 12:30pm & 3:30pm, no stopovers, zero traffic.
Result: Water/Coolant on radiator were not consumed. Reservoir has very minimal h20/coolant consumption to notice.


Overall result was satisfactory. Temp gauge peaked slightly before the 1/2 mark during hot traffic, overtaking and constant uphill. It stays slightly after the 1/4 mark during normal cruising.