i hope this is the right section to post this so here goes i had a over heating problem with my 4.2 patrol when towing the air con would trip out on the long hills not good on a hot day so this is what i did got radiator rodded out changed air con cut out switch on the bottom of the raidiator nissan item allowes temp to get a bit highter then i found this stuff called water wetter its made by red line oils drops the temp by 40 deg and it does work so all you guy's with over heating problems i hope this may help as it did for me the pink one is the one to get just type in red line oils and have a look cheers dingo
ok, the mechanic in me finds it hard to believe such claims and can only take you at your word but lets say water under pressure (in a radiator) boils at round 110 degrees, so if we take 40 degrees off that figue we are thhen left with 60 degrees. Most engines perform at or around 85 degrees give or take a little so in te case you sited te enging would be now running at well below optimun temp and this will have a detrimental effect on your engine. Good to see your overheating is sorted out thouigh.
cheers
blaze
ps I can come up with logigal reasons why snake oil (additives) dont work or dont do as claimed
here's some info from the Red Line site, seems to work for dingo, I'm not a mechanic so leave it up to you if you want to use this Red Line stuff.
Waterwetter Supercoolant and Rust Inhibitor (Pink) is a unique wetting agent for cooling systems (add to the radiator), which can double the capacity to remove heat by reducing temperatures as much as 2030°C. An absolute must for reducing the strain of running vehicle air-comditioning on hot days. Suitable for both petrol or diesel vehicles and trucks. Especially recommended for race engines! It also provides year round protection to reduce rust, corrosion and electolysispassing the most severe Simulated Service Corrosion test developed for automotive coolants determined by the ASTM committee. It also reduces cavitation and air pockets; cleans and lubricates water pump seals; prevents foaming; complexes with hard water to reduce scale. Waterwetter provides much better heat transfer properties than glycol-based antifreeze.
Diesel Waterwetter (Blue) is designed for Heavy Duty Diesel Equipment and Machinery etc where only the Heat Transfer Benefits are required because it is added in addition to another manufactureers rust inhibitor or antifreeze. Supplies similar improvements in cooling efficiency as WaterWetter (Pink), but without the rust and corrosion inhibitors.
I must be lucky with my 1996 4.2 TB42 EFI Patrol. Currently on 250,000km, with original almost everything except break pads, shockies & belts.
Never overheats even pulling the 2.5t van all round the place. Runs just under 1/2 on the temp gauge normally, or just over 1/2 if very hot or pulling up ranges.
I use Valvoline G-05 Antifreeze & Antiboil coolant in the 70/30 water ratio, changed at 4 to 5 yrs. Also use Penrite lubricants throughout.
IMO if that or any other stuff works it will only bandaged the problem and a bigger costlier one may appear later i have 4 trucks and 3 cars and run moreys oil additive in all oils cept for motor bikes (its a anti friction oil think about it guys lol) and i use a good radiator additive and moreys fuel additive i used redline in the wrx diffs and gear box and did vigilante maintenance
Most cars etc, have airconditioning, and the A/C condenser unit is located in front of engine radiator. My vehicle was starting to get warmer, checked everything..All was correct.
But, I decided to remove the grill, seperated the condenser away from radiator and surprise surprise..loads of trapped bugs of all descriptions restricting the airflow. Aftewr a careful clean, the airflow is perfect and temprature is back to normal again...Worth a look.
Yup that will do it i remember when the grasshopper plage went through west nsw you could only drive for half an hr and had to clean the radiator screen out
I have a screen in front of the grill, a fly screen I installed to keep bugs out. My vehicle runs about the same as Cupie's, but uses a bit of oil on long, hot, hard working runs. About a litre in 5000 kms. I just watch it and carry spare. I agree, if it's getting hot, something is wrong. You don't want to crack the head or blow anything up.
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20ft Roma caravan - Mercedes Benz Sprinter - SA-based at the moment. Transport has no borders.
Management makes the decisions, but is not affected by the decisions it makes.
if a motor uses a little oil between changes its doing more good than harm its lubing the top end a bit while you drive if it burns to much it mite gunk up the plugs (if a petrol) cmon the nockers lol
After almost 50yrs in the motor trade I still do not believe that addatives are required in modern oils or coolants as long as you use QUALITY products that match the specs of the manufactuer, especially with later model hi-tec cars. If an engine is overheating something is wrong! do not try to hide it with wizz bang addatives almost any of these will mask the problem for a while but in most cases only untill it has caused major damage and costs you twice as much to fix in the end. Coolants should be changed every 2 years and I have always recomended changeing oil and filter every 5000km,petrol &diesel. I al;so recomend useing a quality engine flush before every oil change.
