OK Loxys long running oil temp experiments:
Mine usually runs between 190-210 F, on a hot day with a big hill it will creep up and over 220F, when driving to Hungary through Austria (lots of hills and some long steep climbs in succession) last year it went over 250F, fully loaded 3 kids, 2 adults been running all day etc etc. On the drive into work there is a fairly steady climb for a couple of miles (A465 up through the clydach gorge towards Brynamwr if anyone knows it) van speed 45-50mph max in 3rd gear, when I hit the top of that its usually just below 220F and will then rise to just over that, then will slowly start to drop again on the flat. If I drive up it slower in 3rd (35-40mph) the temp is higher at the top by ~10F.
This is the original 1600TP engine (50,000 miles on clock) in good condition oil pressure sits at 40 PSI (give or take as I have a 0-10bar sender for a 0-5 bar gauge - marked in PSI, just to add to confusion), it drops a little when the temp goes above 220F. Head temp reaches ~360F going up the same hill to work also has good pressure at startup & idle.
Interestingly the last 1/2 mile or so into work is up a steep 30mph limit road (Aberbeeg to Oakdale backroad), in second gear at 20-25mph the oil temp seems to stay the same, always assumed at low speed that it would increase more, perhaps revs are high enoug to provide good airflow.
Havent got a rev counter (yet).
Gauges are VDO - temp uses dipstick (I have shortened it so it doesnt bend reads a couple of degrees low using boiling water but not far off), pressure uses sender screwed into oil pressure switch hole, head temp uses ring connector around spark plug on #3 cylinder. Stock exhaust, carb, air filter, heating connected up etc figures above have been same for approx 10,000 miles.
Different oils:
Have tried a few (Duckhams, Morris SAE 30, Castrol something, Havoline, Unnamed Hungarian Oil cocktail) and not much difference, although Duckhams something or other (green stuff, will check what it was called) seemed to run slightly hotter. Currently using Havoline 10-40 or 15-40 bought from ASDA 5 litres for 8 quid, seems to be doing the job although I do tend to change my oil every 1500 miles as its so cheap.
Will try and find what all the oils I used were called & weights for you.
occasionally I even glance at the road when driving :wink: :wink:
EDIT: I was planning at some point hooking up the laptop to the gauges so that I can read temps/pressure etc & connect GPS to allow measurements based on location (hills etc) using memory map to provide a chart of altitude etc also then do a comparison on windows open/closed, roof rack or not etc etc, but then again I havent polished & fitted the alloys, fitted my 36 DRLAs, the eberspacher BN4, the turbo thomas exhaust, modified the cruise control to work with the dells etc etc so I may never get round to it....
