5w30 is to light for a high mileage TD4. 5w40 full synthetic or 10w40 semi synthetic is better for the bearings.
Last edited:
TD4 Thermostat Mod - 83° or 89°. Pros and Cons?
- Thread starter kernowsvenski
- Start date
This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
kernowsvenski
Well-Known Member
- Posts
- 1,617
- Location
- Truro
A TD4 with more than 60K on it is too high for 5w30 oil. 5w30 was only used to help reduce fuel consumption. Once the engine is past its warranty mileage. Self preservation is more important than economy.
kernowsvenski
Well-Known Member
- Posts
- 1,617
- Location
- Truro
10w40 it is then lolA TD4 with more than 60K on it is too high for 5w30 oil. 5w30 was only used to help reduce fuel consumption. Once the engine is past its warranty mileage. Self preservation is more important than economy.
Bonkers
Active Member
- Posts
- 410
- Location
- Northampton
Well the thermostat arrived. I measured the hose its 42mm external dia, even allowing for a thin 2mm wall thats 38mm internal at the most.
Measured the thermostat, the main body is 40mm with a lip of 0.5mm which will have to go into the hose if it is to be reattached to the spigot. That makes around 41mm dia.
Talk about squeezing a quart into a pint pot!
Measured the thermostat, the main body is 40mm with a lip of 0.5mm which will have to go into the hose if it is to be reattached to the spigot. That makes around 41mm dia.
Talk about squeezing a quart into a pint pot!
It makes the hose bulge but does fit in. It's very obvious from my picture as too where the thermostat is located.
Bonkers
Active Member
- Posts
- 410
- Location
- Northampton
Oh I’m not about to give up just yet I just need to get a couple of hose clips to have ready to refit the hose.
Watch this space!
Watch this space!
tlo
Active Member
- Posts
- 558
- Location
- nottingham
I asked about this in another post but never got an answer either
any one tried one of these?
teddywood1
Well-Known Member
- Posts
- 5,558
- Location
- stoke-on-trent
the actual thermostat should be 88C degrees plus or minus 2Degrees C for a td4 and 85 Degrees for a petrol engine.
tlo
Active Member
- Posts
- 558
- Location
- nottingham
Been on two runs today and the best temp my td4 got was 69 deg c do you think I need to fit the thermostat mod ?
- Posts
- 83,282
- Location
- Embasinga stocæ
yes
kernowsvenski
Well-Known Member
- Posts
- 1,617
- Location
- Truro
Some quick questions again on this if anyone can help...
1) Is ebay a suitable place to get the Gates stat from? I'm a bit wary of the possibility of copied/cheap parts when using ebay.
2) I'm doing a coolant flush at the same time, so is it worth partially filling the system before fitting the stat in the hose?
3) Can the system be drained and flushed without removing the under tray? I suspect not, but you never know...
1) Is ebay a suitable place to get the Gates stat from? I'm a bit wary of the possibility of copied/cheap parts when using ebay.
2) I'm doing a coolant flush at the same time, so is it worth partially filling the system before fitting the stat in the hose?
3) Can the system be drained and flushed without removing the under tray? I suspect not, but you never know...
Alibro
Well-Known Member
- Posts
- 7,183
- Location
- Northern Ireland
1. Your local auto parts shop will have the stat but it would probably be OK from ebay.
2. Don't know.
3. Possible but probably easier to take the under tray off if you want to drain the system completely from the read bottom hose. When I did it I sucked the coolant out of the expansion tank with a turkey baster so very little coolant spilt.
2. Don't know.
3. Possible but probably easier to take the under tray off if you want to drain the system completely from the read bottom hose. When I did it I sucked the coolant out of the expansion tank with a turkey baster so very little coolant spilt.
tlo
Active Member
- Posts
- 558
- Location
- nottingham
While we are at it in the great scheme of things with my engine running at aprox 68c apart from it not being as warm what will another 20c make to the engine fuel ect ? .I have looked at the big thermostat and that is rated at 80c were the the actual thermostat should be 88C . Plus will leaving the original one in situ be ok does it just stay stuck open ? one last thing with mine still working all be not fully is it still ok to fit this mod?
jedi
Well-Known Member
- Posts
- 2,327
- Location
- A Galaxy far far away.......
Do you see a difference on the in dash temp gauge between the different Temp thermostats?
Bonkers
Active Member
- Posts
- 410
- Location
- Northampton
Not from memory, maybe 30mm ID?
It's quite a bit smaller than the same hose on the manual though. It takes a good shove and lubrication to get the stat into the hose, which then bulges visibly when done.
