What did you do to your XJ today? 1M Views

[lawler]

Originally Posted by XJeepers

You don't want it. Let me know where it is and I will sort it out for you......

im accaly after an 8.25 but im very temped to go and put it on the credit card

[junglejuice]

If it is the Xj d44 and not a modded Tj d44 then I'd take it any day over the 8.25...

[gaz9]

Got the chariot booked in for diff re-gear next week. Also have my SYE, tail shaft, rear main seal and LH engine mount arriving this Thursday. Early Xmas for the ol girl.

[anthonygubbin]

Boiled it the other day. I was towing a trailer in 35deg heat, air con on, up a hill. I switch from LPG to petrol and floored it. It has never boiled before so I was surprised to see it boil. I lost about 2L of coolant. I was thinking I may have had the glycol content too high so have replaced the lost coolant with straight water. Why I say this is because I use the highest glycol percent corosion inhibter I can get.

Regards A

[carvesdodo]

Originally Posted by anthonygubbin

Boiled it the other day. I was towing a trailer in 35deg heat, air con on, up a hill. I switch from LPG to petrol and floored it. It has never boiled before so I was surprised to see it boil. I lost about 2L of coolant. I was thinking I may have had the glycol content too high so have replaced the lost coolant with straight water. Why I say this is because I use the highest glycol percent corosion inhibter I can get.

Regards A

Be careful of eth-gly quantities.

Theres a lot of hoohaa about how wonderful its boilover protection is ... but as the Boiling Point table in the link below shows ... 50/50 is only a few degrees extra benefit compared to plain water.


Then when you compare that table - with the Specific Heat table ... which shows that eth-gly is not as good as water - for losing heat in the radiator ....


The boiling point gains are a moot point.


http://www.engineeringtoolbox.com/et...col-d_146.html


Max 50/50 mix if you want to pretend you live in the northern hemisphere ...
30/70 is ample and Aust. coolant brands even supply 30/70 pre-mixed ...
.... and I use 10/90 off the shelf pre-mix.

[layback40]

Originally Posted by carvesdodo

Be careful of eth-gly quantities.

Theres a lot of hoohaa about how wonderful its boilover protection is ... but as the Boiling Point table in the link below shows ... 50/50 is only a few degrees extra benefit compared to plain water.


Then when you compare that table - with the Specific Heat table ... which shows that eth-gly is not as good as water - for losing heat in the radiator ....


The boiling point gains are a moot point.


http://www.engineeringtoolbox.com/et...col-d_146.html


Max 50/50 mix if you want to pretend you live in the northern hemisphere ...
30/70 is ample and Aust. coolant brands even supply 30/70 pre-mixed ...
.... and I use 10/90 off the shelf pre-mix.

Your on the money with you comments !!
The radiator pressure is the key to higher boiling points.
The heat transfer coefficients for EG/water mixes are well below that of straight water. If you have access to a copy of Chemical Engineers Handbook, the theory is explained there.
Well inhibited water is one of the best heat transfer fluids around.

[layback40]

Originally Posted by anthonygubbin

Boiled it the other day. I was towing a trailer in 35deg heat, air con on, up a hill. I switch from LPG to petrol and floored it. It has never boiled before so I was surprised to see it boil. I lost about 2L of coolant. I was thinking I may have had the glycol content too high so have replaced the lost coolant with straight water. Why I say this is because I use the highest glycol percent corosion inhibter I can get.

Regards A

Hope you didnt use Adelaide tap water. should only use rain water or distilled/demineralized water.