Compression Ignition Addict
Join Date: Apr 2007
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Thanked 34 Times in 28 Posts
Feedback Score: 0 reviews
The hot fluid can never be as cold as the cold fluid in heat exchanger application (when everything is fully up to operating temps). You will always have a higher temperature for the oil than the coolant. It may only be a few degrees, but if your gauges say they are the same temperature, then you have a calibration error (may not be a large error, but it is inaccurate none-the-less).
Ford's rule of thumb of 15*F delta is exactly that - a rule of thumb. Nothing magical about the 15*F, it is just where Ford decided that it was a statistically valid point for being concerned. There are conditions that must be met for it to be valid also - one is that the coolant must be up to temperature (190).
06 F250CC SB FX4 Lariat;ARP studs;OEM gaskets; Banks exhaust;DynaTrac Ball joints;Coolant filter; High-Idle;RACCCV6000;JimmiJammers;Ravelco;SynchroMax trans case;Fumoto valves;Harpooned;CPOhighwayProducts toolbox;tracrac;Fox Weatherboots;Wet Okole Seat Covers;BriteBox;Re-flashed;Quadzilla Recon XZT Fuel Press;Blue FPR spring;DashDAQ;PHP FICM;RiffRaff boots;DCPower270AXP;PowerInverter;Rancho7000's; BPD EGR cooler;One-piece HPOP fitting;BilletWaterPump;SCT w/ Matts SRL;ELC Ultra
Last edited by bismic; 05-17-2011 at 05:24 AM.