Rotella Synthetic 5w-40

[RustyJC]

Is the Mobil One SUV oil a "true" synthetic?

Yes, it's repackaged Mobil Delvac 1 which is a group 4 (PAO - polyalphaolefin base stock) synthetic.



Rusty

 

[MMead]

And I assume that means that Rotella Synthetic is not a group 4 oil. ? Is this info any where on the bottle?

 

[nickleinonen]

And I assume that means that Rotella Synthetic is not a group 4 oil. ? Is this info any where on the bottle?

nope, and legally in north america according to the supreme court rulings in some case where mobil took castrol to court, and lost, a base 3 is considered a synthetic... in europe, they can not call a base 3 a synthetic oil...

 

[DSpencer]

nope, and legally in north america according to the supreme court rulings in some case where mobil took castrol to court, and lost, a base 3 is considered a synthetic... in europe, they can not call a base 3 a synthetic oil...

But not to worry. With the search feature anyone can find out which oils are group 4 and which ones aren't. Most Amsoil, mobil suv, mobil delvac 5-40, royal purple are indeed group 4 oils useable in our trucks. I know I am leaving some other good ones out.

Not to mention the dino oils. Most if not all of the million mile dodge diesels have run regular oils soooooo... ...

I just run synthetics to make me happy. I hope my truck appreciates it.

 

[DPKetchum]

You can also tell by PRICE!

 

[Okey0]

along the lines of this topic, i've been wondering if using synthetic 5w30 is OK in the summertime. Usually the highest temps are low 90s here (NE WYO), though right now we're in a stretch of near 100s. should we leave the 5w30 for the cooler temps and stick with 15w40 during the heat?

 

[sheffield442]

I have a hookup for free castrol enduron s, synthetic fortified, it seems fine and can't complain about the price





http://www.castrol.com/castrol/productdetailmin.do?categoryId=9000439&contentId=7000437

 

[hasselbach]

5w is the startup weight. Once the oil reaches operating temp then it is 40w which is the real important part. The 5w oil aids in cold startups.



The Rotella Synthetic is a great oil, its just not PAO based like Mobil one.



You can use it with confidence and no alarm. It is in my truck as we speak!

Start up weight? Huh?



Motor oil viscosity is measured differently for 0-5-10 and 20 weight, vs. 30 weight and above. (From what I understand, the viscosity is measured at different tempertures).

 

[Vaughn MacKenzie]

along the lines of this topic, i've been wondering if using synthetic 5w30 is OK in the summertime. Usually the highest temps are low 90s here (NE WYO), though right now we're in a stretch of near 100s. should we leave the 5w30 for the cooler temps and stick with 15w40 during the heat?

I had it in my '01 when it hit 110 here in 2002 and it definitely seemed too hot for it. Engine didn't sound so happy and had more blowby. Oil analysis had the highest wear metals of all the oils I tried, 88 compared to typical of upper 40s to mid 50s with Amsoil 15W40 and Delvac 1.

 

[nickleinonen]

You can also tell by PRICE!

not always... my xd-3 pao based [and it says it right on the bottle it is pao] is 50% less than delvac1...

 

[jwilliams3]

Must be cheap!

I get Delvac/mobil 1 for 19. 95 per 5 quarts.

 

[nickleinonen]

Must be cheap!

I get Delvac/mobil 1 for 19. 95 per 5 quarts.

the cheapest i've seen delvac1 up here in canada was like $32. xx cdn funds for the 4 liter jug, and the xd3 can be had for less than $20cdn 4 liter jug if you get it at a distributor... heck, if you want to save nearly 100% cheaper, price the xd3 against what cat wants for their DEO5w40 which is delvac in a cat bottle, the local cat dealer wants over $38 cdn for the 4 liter jug

 

[Cooker]

Start up weight? Huh?



Motor oil viscosity is measured differently for 0-5-10 and 20 weight, vs. 30 weight and above. (From what I understand, the viscosity is measured at different tempertures).

This is correct. The number preceeding the W is not measured in the same way as the number that comes after it.

 

[WNowlan]

Start up weight? Huh?



Motor oil viscosity is measured differently for 0-5-10 and 20 weight, vs. 30 weight and above. (From what I understand, the viscosity is measured at different tempertures).

We measure the oils (0W, 5W, 10W... ) at the same temps. The high tempeture is measured at 100* C and reported as Centistokes. The test is ASTM D 445 as defined by SAE.



At 100* C all of the oils that are a XW-40 will measure in the 15 CsT range (13. 8-16. 4) that makes them a SAE 40 at operating temp.



At the lower end 40* C they will all be different. But SAE does have standards to meet these grades.



Group III is as good as Group IV for high temperature applications. PAO is better at below 45 F. Additives blend better with Group III. You still need Dino to make a PAO product. There has to be a carrier for the additive system in the oil.



So a PAO formulated oil will have up to 20% additives and dino.



I use a blend of Group III and PAO 5W40 that cost 2. 50 per quart made by my company. Works great and I have thousands of Class 8 trucks running it as well. Saves about 3 to 5% on fuel. Drain intervals 2-3 times normal with oil analysis.



Buy an name brand premium and run the recommend change intervals, buy a blend synthetic and run a little longer. Do an oil analysis either way to bench mark your engine. One coolant leak, air induction problem, leaking injector, we can find all of these common diesel engine failures before they cost you an engine in most cases.





Take Care,

Warren Nowlan

STLE Certified Lubrication Specialist

 

[Heavyweight]

Nowlan, what Oil do you recommend????? If I missed it in your post, my BAD! Tx.....

 

[ox1]

45*C ?



How aboot -30*C?

 

[hasselbach]

45*C ?



How aboot -30*C?

-30C? Oh my gosh, that's a killer..... No wonder the traffic is so bad in LA, its rarly gets even down to +40!

 

[nickleinonen]

-30C? Oh my gosh, that's a killer..... No wonder the traffic is so bad in LA, its rarly gets even down to +40!

we got a few days that were -30°C last winter... never did make it to the magic -40°C/-40°F :-laf [thank goodness it is warm out now... better than +40°C with humidity]

 

[hasselbach]

we got a few days that were -30°C last winter... never did make it to the magic -40°C/-40°F :-laf [thank goodness it is warm out now... better than +40°C with humidity]

I guess that explains why there are no freeway shootings in your area. . The bullets get frozen in the barrel... :-laf