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#3451955 - 08/10/14 09:22 PM Looking for UOA with oil treatments
Extinct Offline

Registered: 08/10/14
Posts: 1
Loc: SC
Got a 2002 Land Rover Discovery II with 133k miles, low oil pressure. Too long a story to type here but suffice it to say that I have checked it mechanically and the cost to repair the mechanical bits to correct the oil pressure is more than the truck is worth - however it is my daughters transportation and I would like to avoid buying another one as long as possible.

Currently have Valvoline High Mileage 20w50 in it, previously tried Diesel 15w40 with no change in oil pressure (7 at idle, around 30 at 2500 rpm, mechanical gauge). We live in South Carolina so low temperature days are few and far between - however I am reluctant to dump simple viscosity thickener in due to additive dilution.

Seems the discontinued Valvoline Syntec Oil Treatment was well thought of from a additive and viscosity modifier standpoint but no longer available.

Looking for some UOA's that show effects of currently available treatments - mostly looking for high viscosity at 210 F without significantly higher viscosity at 40 f (or room temp). However I can't seem to find any UOA's with treatments included - anyone have any idea why?

#3451970 - 08/10/14 09:39 PM Re: Looking for UOA with oil treatments [Re: Extinct]
that_guy318 Offline

Registered: 08/04/14
Posts: 11
Loc: PA and SC
-99 Durango 5.2L V8 168k miles
Castrol GTX High Mileage 10w30 with Purolator/Mopar filter every ~3,500 miles

#3452113 - 08/11/14 06:30 AM Re: Looking for UOA with oil treatments [Re: Extinct]
BigCahuna Offline

Registered: 09/29/09
Posts: 1228
Loc: Deep in the heart of Jersey
Most vehicles I've owned will give you 10 lbs or less at idle, and approx a 10 psi jump, for every 1k rpms the motor is spinning. Up to a certain rpm. Usually between 3-4k .I wouldn't worry about having 30 psi at 2500 rpms. What does the manual say yours is supposed to be?.,,

#3452151 - 08/11/14 08:00 AM Re: Looking for UOA with oil treatments [Re: BigCahuna]
SuzukiGoat Offline

Registered: 02/04/13
Posts: 385
Loc: Louisiana
This isnt meant to be mean, but the mext time she wants a disco for a vehicle...tell her no.

Low oil pressure today, a million issues tomorrow. And they are one of my favorite 4x4s.

Dump a quart of 20w60 motorcycle oil in there.if you are worried.
1995 Suzuki Sidekick Auto 4x4 on 33s. Low mileage motor in 200k body. Denso with M1 0w40.

1996 Geo Tracker Auto 4x4 Denso VNG 10w30. 120k.

#3452179 - 08/11/14 08:48 AM Re: Looking for UOA with oil treatments [Re: Extinct]
Greasymechtech Offline

Registered: 07/11/14
Posts: 296
Loc: Paradise of Florida
Oil pump relief might be open. Inspected for sludge or crud yet?

What oil filter?

I've never seen an issue with any of the oil molasses. Feel free to use a pint of any...stp blue/red, motorhoney, hyperlube, or either Lucas treatment.
At what point should a lurker start posting :-)

#3454756 - 08/13/14 07:05 PM Re: Looking for UOA with oil treatments [Re: Extinct]
901Memphis Online   content

Registered: 08/14/10
Posts: 5535
Loc: Northern Kentucky
Thick oils are a band aid. The light goes off but lubrication suffers.

I would be using a 10w40 high mileage. Your oil pressure doesn't seem disastrously low yet and overly thick oils cause more startup wear.
1999 Ford Taurus 145k (Vulcan v6) - M1 High Mileage 5w30 | Fram Ultra XG 3600
2002 Buick Century 102k - PU 5w30 / Fram Ultra XG 3980 / Filter mag

#3456045 - 08/15/14 06:08 AM Re: Looking for UOA with oil treatments [Re: Extinct]
gib Offline

Registered: 10/11/09
Posts: 161
Loc: A Tropical Isle
Originally Posted By: Extinct
Looking for some UOA's that show effects of currently available treatments...

You can look at the last UOA on my Accord. I specifically did not want to increase viscosity, so I combined it with a thin oil, but it still might be interesting to you.

#3457584 - 08/16/14 08:43 PM Re: Looking for UOA with oil treatments [Re: Extinct]
aquariuscsm Offline

Registered: 12/30/06
Posts: 9715
Loc: South Texas,USA
133k miles imo is VERY low mileage for a high end car like that. Out of curiosity,what exactly did they tell you was wrong with it? Did Rovers of that vintage spec a 20W50 (I've read Rovers spec that weight,just don't remember what years)? Is it having a compression problem? If so,how about 20W50 plus a can of Restore? Some people swear by that stuff for old/worn engines.
1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Syntec 10W40/Fram Ultra
Amsoil MTG(tranny)
Amsoil 80W90 GL5(rear diff)
Mobil 1 ATF
Redline Water Wetter

#3457904 - 08/17/14 10:30 AM Re: Looking for UOA with oil treatments [Re: Extinct]
Boss302fan Offline

Registered: 11/07/09
Posts: 1916
Loc: Oconomowoc Wi
Your oil pressures do not seem that low... I would try an OCI of Rotella T6 5W40 syn and see how the oil pressure is. I would bet it will be the same as the 20W50 and it has a good chance to help clean up any issues that you think your Land Rover may have.

#3461503 - 08/21/14 03:42 PM Re: Looking for UOA with oil treatments [Re: Boss302fan]
wag123 Offline

Registered: 06/14/11
Posts: 549
Loc: Texas
From what other BITOG members have said, it appears that L-M MoS2 helps worn engines more than any other additive. L-M also makes this claim. It doesn't thicken the oil up, it helps to "heal" or mitigate some of the damage.