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Old 12-04-2009, 10:22 AM   #1
Leafy
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Default Rotella Synthetic 5w40

Ok, i know I've read on here that a lot of people like the rotella synthetic oil in their cars, I have only been able to find it in 5w40. I have no problem with the 5 viscosity number since its starting to get to be that time of the year up here. its the 40 molecule size that worries me a bit. I know the cars are designed for 30 but after 150l miles have my tolerances opened up enough to use 40 without any issues. Old Nuc I await your response.

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Old 12-04-2009, 10:45 AM   #2
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Default Re: Rotella Synthetic 5w40

Are you having trouble holding adequate oil pressure with 30 weights?

Or are you just hoping the thicker stuff won't squeeze past the piston rings and burn as fast?

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Old 12-04-2009, 10:49 AM   #3
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Default Re: Rotella Synthetic 5w40

No I dont believe I'm really having either of those issues (as if I have an oil gauge). I've just seem to read a lot on here about people using the rotella synthetic to great success, and its cheaper than mobile 1. I just want to make sure that the people who have been using the rotella havent been using 30.

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Old 12-04-2009, 11:32 AM   #4
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Default Re: Rotella Synthetic 5w40

The 5w-40 brackets the 5w-30. You can use it but you need to look up the physical differences between the 5w-40 you want to use and the specified oil.

There are several different formulations of 5w-40 oils and they are not actually interchangeable.

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Old 12-04-2009, 12:39 PM   #5
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Default Re: Rotella Synthetic 5w40

My SC2's engine had Rotella Synthetic 5W40 in it when I spun the rod bearing. I won't use a xW40 oil again. I might go with Mobile 1 0W30 if I re-ring the engine this winter. I have a bunch of different weights in it right now (10W30, 10W40, 0W30, and 5W30, and 5W40) since it has been gobbling it up. I've just been adding whatever leftover oil I have had on hand. Keeping it filled is more important than specific type. As far as recommendations, I haven't had trouble with Valvoline Maxlife 10W30/5W30. I wouldn't use the 10W weights in winter.

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Old 12-04-2009, 01:01 PM   #6
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Default Re: Rotella Synthetic 5w40

yeah so I'm thinking of taking it back, I'm only using just over a quart every 3000 miles. I really dont feel like spending 8 dollars more a gallon on mobile 1, so I check valvoline.

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Old 12-04-2009, 01:30 PM   #7
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Default Re: Rotella Synthetic 5w40

Are you sure the Mobil 1 bottles are gallons? Rotella-T is a truck oil, typically dispensed in gallons. Oil for cars like Mobil 1 5w30 often comes in 5-quart bottles. 'Round here, Mobil 1 is usu. $5.50-6.00 a quart, and Rotella-T Syn is about $20 a gallon, so only a coupla bucks cheaper than M1.

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Old 12-04-2009, 02:12 PM   #8
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Default Re: Rotella Synthetic 5w40

Yeah I realized that in the store. I got valvoline synthetic it comes in a 5.28 quart bottle. *******s couldn't have added a quarter quart more?

Anyways I'm sitting here waiting for the pistion soak, damn valve cover is leaking into the #2 cylinder again, and my plugs are white on and around the two poles but black up inside. That means I'm running lean and burning a bit of oil right?

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Old 12-04-2009, 02:58 PM   #9
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Default Re: Rotella Synthetic 5w40

I use the Rotella T 5W40 in everything but my saturn. For 2 reasons....

There is a lot is Zinc in the oil even though it is rated "S" as well as "C" and at 147000 miles on the stock CAT I don't want to kill it The zinc fouls them up over time. The latest oil spec was for removing some(or most) zinc and phosphorus to guarantee the CAT's last their 150,000 warranty period.

Also a guy I work with, used the wrong oil in his saturn and killed the motor. Top end failure I believe from oil starvation.

I do use it to top off though since I seem to always have a partial gallon lying around.

In my info gathering the penzoil platnum 5W30 uses the same base stock as the rotella so I use it. (helps to be owned by Shell as well)

I use the rotella in: (and love it) Been using it since it first came out

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Old 12-04-2009, 07:52 PM   #10
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Default Re: Rotella Synthetic 5w40

I liked the rotella because it has lots of good lubricating zinc, dont care if the cat dies. Still waiting on the piston soak.

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Old 12-04-2009, 09:14 PM   #11
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Default Re: Rotella Synthetic 5w40

Quote:
Originally Posted by 1996SL11.9L View Post
I use the Rotella T 5W40 in everything but my saturn. For 2 reasons....

There is a lot is Zinc in the oil even though it is rated "S" as well as "C" and at 147000 miles on the stock CAT I don't want to kill it The zinc fouls them up over time. The latest oil spec was for removing some(or most) zinc and phosphorus to guarantee the CAT's last their 150,000 warranty period.

Also a guy I work with, used the wrong oil in his saturn and killed the motor. Top end failure I believe from oil starvation.

I do use it to top off though since I seem to always have a partial gallon lying around.

In my info gathering the penzoil platnum 5W30 uses the same base stock as the rotella so I use it. (helps to be owned by Shell as well)

I use the rotella in: (and love it) Been using it since it first came out

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Why the 5W40? Don't the diesels like 15W40? Use it in my 2-stroke dirtbike tranmissions, F-350 Diesel, Trooper Diesel, rototiller, lawnmower, chipper/shredder.

For the SC2, as soon as I learned all the zinc was removed from oil, been adding a little ZDDPlus to semi-synthetic...just to make me feel better.

I'd be happy to stop adding ZDDP if someone could assure me the '98 SC2 engine had valve stems and timing chain designed for use without zinc.
...In the Rust Belt, the entire exhaust system falls off the car before 150,000 miles. Not too concerned 'bout the Cat. warrenty

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Old 12-04-2009, 11:08 PM   #12
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Default Re: Rotella Synthetic 5w40

Use Amsoil 5w-30 Heavy Duty Diesel. You get all your zinc and phosphorus and a real PAO synthetic. And the engine seems to like it just fine.

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Old 12-04-2009, 11:11 PM   #13
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Default Re: Rotella Synthetic 5w40

Quote:
Originally Posted by OldNuc View Post
Use Amsoil 5w-30 Heavy Duty Diesel. You get all your zinc and phosphorus and a real PAO synthetic. And the engine seems to like it just fine.
and how much does that cost? 50 dollars a gallon?

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Old 12-04-2009, 11:41 PM   #14
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Default Re: Rotella Synthetic 5w40

Quote:
Originally Posted by HStockSolo View Post
My SC2's engine had Rotella Synthetic 5W40 in it when I spun the rod bearing.
D'oh! mine had a mixture of Saturn and Valvoline 5W30 when it spun all 4 con-rod bearings. S-Series need a baffled oil pan or an oil accumulator for sustained cornering g's

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Old 12-05-2009, 12:20 AM   #15
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Default Re: Rotella Synthetic 5w40

Most engines built after the late 80's were of the roller cam variety. They used less horsepower and were not as finicky as a flat tappet cam for lube and cam break-in. Since they are roller they can use less zinc etc because it's a roller. GM has been using roller lifters since the early 80's Mopar since the late 80's on small engines 2.2L, 2.5L...and early 90's with the V8's (Magnum engines went roller)

I tried confirming our cam's are roller cams but can't. May be because its no big deal anymore.


The 5W40 oil has the same specs as the 15W40 plus it flows at a lower temp better. The rotella synthetic is not a PAO but is also not a Dino oil. It is made from the slack wax removed from crude oil during the refining process. So...even though it's a groupIII synthetic it never originated from an oil base.

Oil and oil addatives are a touchy subject (just like who makes the best oil filters)

My cummins has a 3 QT oil galley and it takes a few seconds to build pressure because it must first pressurize the main galley. With the 5W40 I get oil pressure twice as fast as 15W40 anything.

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Old 12-05-2009, 12:23 AM   #16
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Default Re: Rotella Synthetic 5w40

91-99.5 flat tappet. 99.5-03 roller. Of course the only put the roller in the ****ty head, it would have been great if they'd done it to 1st and 2nd gens.

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Old 12-05-2009, 12:25 AM   #17
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Default Re: Rotella Synthetic 5w40

Quote:
Originally Posted by Leafy View Post
91-99.5 flat tappet. 99.5-03 roller. Of course the only put the roller in the ****ty head, it would have been great if they'd done it to 1st and 2nd gens.
Flat tappet....... use the addative, go with the diesel oil or hope the oil companys did their homework on haw to get the same quallity with a different product.

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Old 12-05-2009, 12:58 AM   #18
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Default Re: Rotella Synthetic 5w40

Quote:
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91-99.5 flat tappet. 99.5-03 roller. Of course the only put the roller in the ****ty head, it would have been great if they'd done it to 1st and 2nd gens.
Why couldn't you use 3rd gen cams in a 1st/2nd gen head? Or do you need the corresponding parts/head too so you can't just swap cams?

Sorry, my knowledge of valvetrains is pretty shallow.

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Old 12-05-2009, 01:55 AM   #19
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Default Re: Rotella Synthetic 5w40

You have to swap the entire head, as a minimum, and then deal with intake and exhaust.

All you get out of the roller system is more reciprocating mass and more parts.

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Old 12-05-2009, 01:58 AM   #20
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Default Re: Rotella Synthetic 5w40

Quote:
Originally Posted by OldNuc View Post
You have to swap the entire head, as a minimum, and then deal with intake and exhaust.

All you get out of the roller system is more reciprocating mass and more parts.
all that and you get the ****ty flowing 3rd gen head. I man the 1st and 2nd gen flow like absolute crap as it is, compared to other 4 bangers. This is why full bolt on's to this motor only nets you 10-15 hp and on a B motor civic they net you 20-25.

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