Guys, have been towing a 2.2tonne off-road van round Oz with a ZD30DI. So far so good. Noticed on the ECUtalk gauge coming through a mountain range in WA on a day of about 30 degrees, the water temp raised to 98 degrees C. Turned off the air conditioning and backed off a tad and it dropped down a bit, but with the air on and travelling at 90-95km/h seemed to regularly increase towards 98. Noticed the next day the coolant was not visible in the overflow bottle.
Had the radiator pressure tested 2 months ago without issue. The car was serviced by Nissan today and the dealer said 98 degrees was in the expected range and the likely cause of the loss of fluid in the overflow bottle was evaporation. They ran the car and tested the cooling system and said it was all ok. Read a few posts on this forum which suggested hot running can cause the coolant to boil into the overflow bottle causing the evaporation. Some suggested the issue was radiator cap related. If my pressure test was ok, I assume I don't have a radiator cap issue?? So just wondering whether a radiator rodding is worthwhile and if so, who to take it to in Perth. Or is 98 degrees ok? Car has done 130,000km.
We are working our way north so expect the temperatures to only get hotter and radiator places to reduce in numbers. Thoughts?
Thanks
Had the radiator pressure tested 2 months ago without issue. The car was serviced by Nissan today and the dealer said 98 degrees was in the expected range and the likely cause of the loss of fluid in the overflow bottle was evaporation. They ran the car and tested the cooling system and said it was all ok. Read a few posts on this forum which suggested hot running can cause the coolant to boil into the overflow bottle causing the evaporation. Some suggested the issue was radiator cap related. If my pressure test was ok, I assume I don't have a radiator cap issue?? So just wondering whether a radiator rodding is worthwhile and if so, who to take it to in Perth. Or is 98 degrees ok? Car has done 130,000km.
We are working our way north so expect the temperatures to only get hotter and radiator places to reduce in numbers. Thoughts?
Thanks