Turboman
Mab An Gov
As far as I know, A3/B3 is the right sort of oil for a TD4. But I would think that is a bit on the thick side, especially the cold weather viscosity.
What sort of temperatures are you operating in?
Shaun4456
Active Member
Am in highlands in Scotland's so prob no use. Was cheap bargan and worth a gamble . Might use one to flush out engine before I top up with right oil
Turboman
Mab An Gov
If Nodge says it is ok, it probably is. He knows a lot about freelanders.
Might be an idea to give it a few minutes to warm up in the wintertime, though. Gets pretty raw up there.
Colthebrummie
Well-Known Member
I know engines run at tighter tolerances nowadays compared to say, the 1970's but in those days we poured in 20/50 and used it all year round. Does modern oil really need to be so thin especially in an engine with plenty of miles on the clock.
Col
Col
Turboman
Mab An Gov
Not really. But 15w will be like treacle on a cold start on a Highland morning. It can go to -20 up there. Puts a lot of load on a starter motor and battery.
And takes a while to get round an old worn engine.
guineafowl21
Well-Known Member
The ACEA spec is ok, but the 15 winter viscosity is too high. I’m thinking of the extra load on the starter and oil pump, tiny little oil galleries, hydraulic tappets, turbo...
Summer oil flush? Remember, oil is cheap, engines are expensive!
Nodge68
Well-Known Member
If it cost little money, then use it as a hot engine flush.
However a 15w40 would likely be fine for mild winter use, in an engine that has travelled a good few miles. As bearing clearances increase due to wear, so does the speed at which oil moves about the engine. This is why thin oil doesn't support the bearings correctly when it's hot, in high mileage engines.
I'd have no problem using it myself as a summer oil, as I use 10w40 in my TD4 all year anyway. The oil pressure is already up during cranking with that grade. So I can't see any real problems with using a 15w40 oil in the summer.
However a 15w40 would likely be fine for mild winter use, in an engine that has travelled a good few miles. As bearing clearances increase due to wear, so does the speed at which oil moves about the engine. This is why thin oil doesn't support the bearings correctly when it's hot, in high mileage engines.
I'd have no problem using it myself as a summer oil, as I use 10w40 in my TD4 all year anyway. The oil pressure is already up during cranking with that grade. So I can't see any real problems with using a 15w40 oil in the summer.
guineafowl21
Well-Known Member
Nodge68
Well-Known Member
They got warm summer's up there too.The lad’s in Inverness...
It'll be fine if used above 5°C or as a flushing oil.
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Turboman
Mab An Gov
Good idea. Or, as suggested before, run the 5W40 in the winter and the 15W40 in the summer.
Shame to waste cheap Castrol altogether, the stuff is arms and legs normally.
Colthebrummie
Well-Known Member
Did I read the original post correctly, did you really buy 5 litres of synthetic Castrol for 90p. Are you sure it is Castrol and not chip oil.
Col
Col
Shaun4456
Active Member
90p for 4lt but took 5 bottles.
Colthebrummie
Well-Known Member
