OiL

[Elemental]

Depends on a few factors. being they are both 15-40s, I dont think there woul dbe much difference in cold start...At 32 they are both acting like 15 wieght oils.

Rover DID have a TSB about cold climates. The tsb suggested to go to a 5-30 in freezing then back to 15-40 in summer.

My experiance with 5-30s in Rover engines is the oil pressure really sucks. You need 10 psi for every 1,000 rpm.. When I had castrol in my rover, at operating temp I had 12-15 at 3,000 rpm. WAY too low.

I dont think the 15-40 would give you any cold start problems...It didnt in mine, but if synthetic makes you feel good...There isnt any harm.

[sven]

How are they both 15w-40? Im not following that.... Rotella Synthetic is 5W-40

Anyways Im not dead set in using synthetic oil..Most likely the previous owner didnt as I found he used Jiffy Lube oil filters. I'm going to try out the regular 15w-40 Rotella this weekend as its about 1/2 the price of the synthetic. Thanks Chris

[Elemental]

Opps, sorry, my bad. I missed that. But, it looks like that oil will meet the grade.

Edit. Rotella 5-40 meets Detriot Disels 7SE270.

Here is a copy of what that means...

http://www.detroitdiesel.com/support...270_010307.pdf

Note, on page 10, they indicate that the sheer rating of 5-40 is at least 3.7, similar to a 15-40. So, Yeah, your going to get 15-40 protection sheer wise from this oil.

[lucasd2002]

Chris, it looks like Mobile 15-50 is also ACEA A3 compliant. Is your advice to simply buy oil based on the ACEA A3 rating?

[Elemental]

A3 rated oil is good! Its one of the ratings I would look for, but A3 is going to have good shear protection. I woudl have no concerns using it.

If its a3 rated, you are certainly doing your Rover a good thing.

[MysteryTheatre]

I read about a lawsuit between Mobil and Castrol about four years ago... Mobil sued Castrol for false advertising on their Syntec oil , it appears it is displayed on the shelf as a "synthetic" motor oil when in fact it is nothing but grade 3 dyno base oil with a nice additive package. Mobil Lost the suit , because the word synthetic was purely a marketing term and Castrol proved their ultra refined fossil base oil was better than almost any synthetic bases in many ways. It would have been different if they were selling a grade 1 base oil marketed as synthetic...meanwhile mobil was selling mobil1 which apperently was so loaded with zddp it was killing cats? my question , is there any reason not to run castrol syntec, if its a grade three base oil isn't that superior to the grade 2 in most 15-40 and grade1 in most api service oils? or is base grade only one factor, i understand the refinement process: iso-dewaxing
removes many of the parafins that condition seals and gaskets, so maybe overly refined bases are TOO PURE? my thought was to mix my Sinclair 15w40 (4qts)with castrol sytec 5w50 (2 qts)

[Elemental]

Not sure what woudl happen. I woudlnt do it, only because....I dont know what would happen. Mixing products can produce totally different results.

Hydrogyn is a gas.

Oxygen is a gas.

When they combine, they produce a liquid (H20).... That kind of thing..

I'm sorry, but your question about mixing is over my head...I dont want to mislead.

[MysteryTheatre]

I'll Just stick with straight Sinclair Dyno Supreme , it has an ACEA A3 rating.
i like sinclair gasoline too , good power.

[antichrist]

Originally Posted by Elemental

Typical SAE 10W-40 and SAE 20W-50 products are discouraged by virtually EVERY OEM and they are not approved by any OEM for use in modern cars.

Careful with those authoratative blanket statements.
From a D1 owners manual:

[Elemental]

Fine, land rover does...ANd only on their 50 Year old Engine design. Look at LR3, or really anything made with current engine design. It doesnt change that the Base oil is often times the cheapest avalible.

Edit - Lets take a good Look at the LR3. It asks for Oil that meets WSS-M2C205-A (its a Ford rating really).

Look at Page 6 for what that means.

http://www.ilma.org/resources/ford_2004_my.pdf

Not every 5-30 meets these specs. Its still a 5-30 as far as the "Starburst" people are concerned...

A fella could use a 5-30 thinking he is doing a good thing for his LR3 and not be using the right oil. One has to research their oil choise BEYOND the XWXX/SM rating.

Also, notice they mention GF-3 Ratings... Here is good article about that.
Clean Oil Reduces Engine Fuel Consumption

Also, another link that applies to this discussion.
Oils: What motor oil should I use? Which oil is best for my Porsche or aircooled engine?

Originally Posted by From the Above link

If new oils, with reduced zinc etc., are lacking in lubrication quality, why is it that engines are not being destroyed at a high rate?
Wear falls into two categories - catastrophic and non-catastrophic. Ever since the creation of the API SL standard, there have been more catastrophic cam and lifter failures from poor boundary (metal-to-metal contact) lubrication as well as corrosive bearing wear in areas with hydrodynamic lubrication. One industry wide solution was the supplemental use of EOS or switching to a CI-4 diesel oil. Some companies, ours included, looked towards coatings for bearings and friction surfaces to remediate the problem, or even cutting edge materials like sintered silicon nitride composite followers to remove the wear component all together. The other failure mode of engines with these poor performing lubricants was in non-catastrophic, measured in increased wear, as in bearings, cams, lifters, rockers, etc. all showing wear indicative of very high mileage or severe use in very few hours. The problem here is that most of the problems fall under the non-catastrophic, and may take years to surface. Only when a catastrophic failure occurs, does a shop take proactive measures to prevent this from happening again. All it takes is one catastrophic failure on a very high dollar engine to get a shop to make such a change, and until then, most shops continue to play Russian roulette whether they know it or not.

You may say I'm a dreamer.....But I'm not the only one.

[polar]

Looks like the Delo 400 15W-40 has ACEA E7-E2 https://www.cbest.chevron.com/msdsSe...e&lbLanguage=e

And Penzoil Platium Says"it meets all ACEA requirements all grades"http://www.pzlqs.com/Tech/Pdsheet/Do...icMotorOil.pdf

I saw nothing about shear,but I might have missed it.

[Elemental]

Excellent! I agree. The penoil one is a little vague, but I would use it based on what that sheet says.

[Elemental]

I RULE!!!!

A car show here in STL on the radio had a oil expert from Mobil/Exxon.

I busted out my ZDDP, and Shear rating action.... THe host was a little disoriented.... BUt, the expert and I had a great convo. That was fun!

[Jupiter Rover]

once again your my HERO chris!! wooot

[Jupiter Rover]

ask them for a copy of the tape! so we can all listen haha