Murkster

New Member

• Mar 13, 2006

• #1

Hi all, am hoping to change out the engine oil this weekend coming. Can I use, or has anyone used fully sythetic oil in their Discovery?

Mines a 200 TDi, 161000 miles ...

Also what about diffs transfer/gear box has anyone used any synthetics here..?? (I have added Molyslip to these areas and the engine with positive results..)

Thx

MurK

 

ormus

New Member

• Mar 13, 2006

• #2

generally not a good idea to change the type of oil in a high mileage diesel engine.
the reason is, cause it can react with the existing mineral oil deposits and loosen them. with possible catastropic results.
there is at least one case of a guy doing this on a perfectly good engine, and it was wrecked within 2000 miles.
best advice is to stay with the usual stuff.

 

l3on

New Member

• Mar 14, 2006

• #3

........although land rovers own top spec oil is fully synthetic, and my ole girl seems to like.

 

ormus

New Member

• Mar 14, 2006

• #4

thats ok if the engine has always had it. then stick to it.
it just isnt good policy to change from one type to another.

 

yella

New Member

• Mar 14, 2006

• #5

i agree with ormus, if you use regular oil leave it as is and stick to regular oil. synthetic is ok if the engine has had it from new

 

James

Active Member

• Mar 14, 2006

• #6

How do I know what has been used in the past as I am needing to do my first service?

 

ormus

New Member

• Mar 14, 2006

• #7

check with the last owner?

 

James

Active Member

• Mar 14, 2006

• #8

it was a little front garden trade guys with only paperwork, paperwork only says 'oil' could be cooking oil for all I know or none at all, that is the reason why I prefer to do as much as I can myself. Can't get riped off with labour costs and non existant replacement parts.

 

ormus

New Member

• Mar 14, 2006

• #9

service book? contact the garage. they can tell you what they put in.

 

James

Active Member

• Mar 14, 2006

• #10

smart thinking there!

 

ormus

New Member

• Mar 14, 2006

• #11

i have my moments.

 

Sheddy

New Member

• Mar 15, 2006

• #12

Isn't a fully synthetic oil more likely to run into the sump when you stop, therby creating excessive wear on startup?

 

l3on

New Member

• Mar 16, 2006

• #13

Sheddy said:

Isn't a fully synthetic oil more likely to run into the sump when you stop, therby creating excessive wear on startup?

Click to expand...

In theory should be less likely to 'run off' hot components than mineral oil due to the make up of the synthetic oil, although being generally 'thinner' at cold temperatures will be ready and waiting to be pumped from sump more easily at start-up.

Change mine to fully synthetic unaware of previous owners oil at 100,000 miles, but change it every 2000 miles or so, but then I tow 3 tonnes very regularly and i'm fussy.