Betsy Posted September 23, 2007 Share Posted September 23, 2007 I have a 1966 2a, 109 petrol 2.25. The engine is in perfect condition, after I rebuilt it 8000 miles ago. I am taking her to Morocco in 2 weeks, and will be driving her all the way there and hopefully back again. Currently she is running with Halfords 20w 50 classic motor oil, its traditional low detergent 'green lube' and is advertised as being particularly suitable for older design engines. I have also tried Castrol GTX 10w 40 in the past. The only difference I can report is that the GTX oil pressure is lower when the engine is hot at 3000 rpm, showing about 50psi on the guage. On the Halfords 20w 50 it shows 58 psi Considering that she will be doing about 4500 miles in the next month, much of it in the desert, which oil would you use? Quote Link to comment Share on other sites More sharing options...
Diff Posted September 23, 2007 Share Posted September 23, 2007 I would use the 20w 50 myself. 10w 40 may be a little on the thin side if it gets worked hard and hot. Not just in Morrocco, but on the long sustained drive through Europe and back. The higher viscosity 20w 50 will be less likely to leak through any oil seals too. Regards, Diff Quote Link to comment Share on other sites More sharing options...
Les Henson Posted September 23, 2007 Share Posted September 23, 2007 I agree with Diff - 20w 50 is the better oil. Modern oils will be too thin and your engine may sound a bit clattery. Les. Quote Link to comment Share on other sites More sharing options...
Betsy Posted September 24, 2007 Author Share Posted September 24, 2007 Good answers guys, its what I wanted to hear. It is also true that the rear crank seal leaked a bit with GTX, and does not seem to leak on 20w 50. Quote Link to comment Share on other sites More sharing options...
Icedmunkie Posted December 1, 2007 Share Posted December 1, 2007 I Use 10/40 from rock oil but cost its from work and free but then stick in 20/50 some days.... I use loads of oil beacuse of sump compression (possibly) and leaks but the engine is a good one bar that... Quote Link to comment Share on other sites More sharing options...
Eastman Posted May 7, 2012 Share Posted May 7, 2012 I have a series IIA 1968 petrol 2.25 Land Rover which is waiting for some engine oil. I gathered from the correspondence above that 20/50 would be a good choice. So I went and got some. My problem right now is I cannot identify the oil filler. I see two opennings in the engine; One is on the engine cover (which is very hard to open and I am reluctant to use excessive force in case I break something). The other is on the right side of the engine. I can remove the cover but I do not see any sign of oil in there. So which one is it? Please help. Quote Link to comment Share on other sites More sharing options...
ejparrott Posted May 8, 2012 Share Posted May 8, 2012 Its a long time since I looked at a 2286 petrol, but on the diesel, there is a filler tube on the drivers side of the engine, which has what looks like a rad cap on the top. You may have a rocker cover with a filling point, this is usually a plastic cap, orange I think, and IIRc it screws in. Quote Link to comment Share on other sites More sharing options...
Phil Hancock Posted May 10, 2012 Share Posted May 10, 2012 Early to mid 2a have a fixed breather(to atmosphere) on the rocker cover that is retained by a peg bolt & a push on/pull off breather cap(to atmosphere) on the oil filler tube. Late 2a/3 have a fixed breather(to the inlet system) on the rocker cover that is retained by a peg bolt & a twist on/twist off cap(sealed) on the oil filler tube. Quote Link to comment Share on other sites More sharing options...
Gareth Dickens Posted May 11, 2012 Share Posted May 11, 2012 In South Africa which has higher temps than Britain 20W50 has been the choice oil for the 70's to 90's on most engines. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted May 11, 2012 Share Posted May 11, 2012 If the crank oil seal leaks, surely it's time to fix that before setting off for the desert? Quote Link to comment Share on other sites More sharing options...
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