Land Rover Oil Recommendation

[DrDodge]

I have a 2003 Land Rover Discovery SE 4.6L with 120k miles. Currently I'm running Mobil 1 10W40 with a factory filter and it is developing a valve train click at idle when hot. Almost sounds like collapsed lifters.

The Owners Manual says to use Castrol 10W40 engine oil meeting specification ACEA A2.

Suggestions?

Jeff

 

[GSCJR]

Try some Rotella 5w-40. Or you could go the other way and try 5w30. I have had success both ways, thinner or thicker than spec'd to clear unwanted noise. Basically, trial and error. Just my 2c. HTH

 

[barkingspider]

I agree with rotella 5w-40

 

[Kuato]

Many have reported noisier engines on M1, myself included. Rotella is good stuff.

 

[QuietPortage]

Yep. Rotella T6.

 

[aquariuscsm]

If you need 10W40,there's always Syntec 10W40 via Walmart 5 quart jug,only $24.

 

[typ901]

I ran Rotella T 5w-40 in my '95 RRC and '99 DII. Worked well.

 

[DrDodge]

Sorry for the late response. I'll definitely give it a try.

Jeff

 

[CATERHAM]

I thought the Discovery was spec'd for 5w30?
I certainly wouldn't be using anything heavier than Mobil 1 0W-40.

 

[Peted]

I absolutely loved this truck and wrote a couple tech articles on it in the past.

I would use a 5w40 HDEO; Rotella or Chevron will do. 15w40 will work in a hotter climate. I would Not use a 5w30. Mobil 15w50 also works well, in warmer climates.

It is Flat Tappet engine design. It need high ZDDP. Stick to an HDEO.

 

[Peted]

Originally Posted By: CATERHAM
I thought the Discovery was spec'd for 5w30?
I certainly wouldn't be using anything heavier than Mobil 1 0W-40.


It's the Discovery II, not the newer Discovery III/IV or LR3/LR4.

These older Discovery's have a Flat Tappet motor and need heavier weight oil with high ZDDP.

Otherwise you are correct

 

[Peted]

Originally Posted By: DrDodge
I have a 2003 Land Rover Discovery SE 4.6L with 120k miles. Currently I'm running Mobil 1 10W40 with a factory filter and it is developing a valve train click at idle when hot. Almost sounds like collapsed lifters.

The Owners Manual says to use Castrol 10W40 engine oil meeting specification ACEA A2.

Suggestions?

Jeff


Question:

What type of oil filter are you running?

Any other problems with the vehicle? (Just curious)

 

[Zaedock]

Originally Posted By: Peted
These older Discovery's have a Flat Tappet motor and need heavier weight oil with high ZDDP.


Just because an engine has flat tappets, does not mean it NEEDS high ZDDP.

 

[DrDodge]

Peted; As stated running the OEM Land Rover filter. Yes, there are a few other issues with it. It IS an old Rover after all lol. It's got good bones, it just has a hundred little things that need doing.

Caterham: The Owners Manual says to use Castrol 10W40 engine oil meeting specification ACEA A2.

I think I'll try the Rotella T6 5W40 and see what happens. WalMart has it for $5/qt too, so it's not too expensive.

On a side note my local AutoZone had Pennzoil Ultra on clearance for $3/qt.

Jeff

 

[typ901]

Originally Posted By: DrDodge
Peted; As stated running the OEM Land Rover filter. Yes, there are a few other issues with it. It IS an old Rover after all lol. It's got good bones, it just has a hundred little things that need doing.

Caterham: The Owners Manual says to use Castrol 10W40 engine oil meeting specification ACEA A2.

I think I'll try the Rotella T6 5W40 and see what happens. WalMart has it for $5/qt too, so it's not too expensive.

On a side note my local AutoZone had Pennzoil Ultra on clearance for $3/qt.

Jeff


I did run Pennzoil Platinum 5w30 in mine one winter. Turned over much easier than with Rotella T. My '95 RRC didn't have the most aggressive starter though. I ran 15w40 (pre BITOG days) until a cold snap in November (15F)had resulted in a no-start... at least it was in my driveway. Caterham's thoughts about 0w-40 are valid; just monitor your rate of burn-off, mine was getting close to 500 miles a quart when I sold her off!