What do you run for oil?

[qwiknotch]

I dont have a Whipple, mine is a Vortech, but my engine builder told me to use Mobil 1 Euro 5w40 and I use a Wix XP filter.

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[robvas]

API SP oils are also formulated to address LSPI.

Correct, but the certification only rests new oil where SQ also tests used. The protection for LSPI is supposedly better

In addition, protection against LSPI plays an important role. Low-speed pre-ignition (LSPI) refers to the undesired premature ignition of the fuel before the actual combustion. This can lead to engine knocking and serious damage. The engines most affected are modern downsized gasoline units with direct injection. “How well an engine oil protects against LSPI has only been tested on fresh oil so far,” explains Oliver Kuhn. “A new feature of API SQ is that it looks at the overall condition of the oil. The newly introduced LSPI Aged Oil test examines the protection against LSPI in used or aged oil. Our products have successfully passed this test.”

The API SQ also aims for cleaner pistons due to the required improved protection against oxidation and deposits. “Only a clean engine works perfectly. The cleaner the engine, the better for the entire system,” Oliver Kuhn points out

 

[SheepDog]

Correct, but the certification only rests new oil where SQ also tests used. The protection for LSPI is supposedly better

In addition, protection against LSPI plays an important role. Low-speed pre-ignition (LSPI) refers to the undesired premature ignition of the fuel before the actual combustion. This can lead to engine knocking and serious damage. The engines most affected are modern downsized gasoline units with direct injection. “How well an engine oil protects against LSPI has only been tested on fresh oil so far,” explains Oliver Kuhn. “A new feature of API SQ is that it looks at the overall condition of the oil. The newly introduced LSPI Aged Oil test examines the protection against LSPI in used or aged oil. Our products have successfully passed this test.”

The API SQ also aims for cleaner pistons due to the required improved protection against oxidation and deposits. “Only a clean engine works perfectly. The cleaner the engine, the better for the entire system,” Oliver Kuhn points out

I generally run PUP 0-40. relatively affordable, API SQ rated, Jeff Bezos delivers it personally.

I think too many people are using 5W-50 for no good reason. The only time to run an oil that heavy, is if you are consistently exceeding the temperature range of a 5W-30 or 40 weight oil. For just a street car, 5w-50 oils aren't providing any more protection that a 30 or 40 weight, but are sacrificing cold start protection and efficiency. just my .02

 

[SheepDog]

Cant beat this for price/performance either

https://www.walmart.com/ip/Castrol-...otor-Oil-5-Quarts/5265004985?adsRedirect=true

 

[wingnutt]

SuperTech bitche$ ...its only 5 bucks a quart

 

[Cactus Jim]

Don’t get fooled like most people do about the label saying “Full Synthetic”. In1999 Mobil1 sued Castro over their claim to be Synthetic when in fact their base stock is refined crude and not a lab made synthetic ester base like Mobil1and AmsOil. Mobil1 LOST in court, because it was ruled that because their additive package contains a lab made synthetic ester, they could claim and label the oil as a synthetic. Now, because of this legal loophole, a lot of oils like Valvoline and PensOil can claim to be synthetic when in fact they are still using a refined crude base stock. After the additive package is used up, the remaining oil base stock is just like the same old oil your Grandpa used in his 1951 Flathead! Driven, AmsOil and Mobil1 are truly lab made synthetic ester based oils.

 

[engineermike]

@Cactus Jim not all of that happened the way lore says it did. They didn't actually go to court but rather argued the cases in front of the BBB.

For starters, understand that Group I, II, and III are all fossil-based oils of progressive processing and quality. Group III (or II) are NOT what available in the 1950s. Group IV is PAO synthetic, and Group V is all other synthetics including Ester.

Mobil1 owns the GroupIV/PAO (not Ester) technology and, as such, pushed it hard some decades ago. Conversely, other companies argued that GroupIII is so clean that it should also be considered synthetic.

More recently, and I'm talking the last 15 years or more, Mobil1 started using GroupIII base oils for some of their synthetics. You see, Group IV/PAO is very expensive, about double the cost of GroupIII, but it doesn't fetch double the price of its competitors on the WalMart shelf so they had to lower their cost somehow to compete. So, don't assume your Mobil1 is "true" synthetic.

To muddy the waters further, Shell/Pennzoil/Rotella/Quaker state commercialized the GTL process, which yielded a very high quality base oil. This oil was notably better than existing GroupIII but could not technically be classified differently. Insiders say this base oil is overall as "good" as PAO (better in some ways, worse in others), but costs much less to make. This is where the classification of "GroupIII+" came in.

One more caveat is that modern oils must contain some "synthetic" portion to meet current standards, I believe starting around API SM. Therefore, all "conventional" oils are actually semi-synthetic.

This is partly why I use Pennzoil Platinum as much as I can, because at least you know you're getting a GroupIII+ base oil, whereas with Mobil1 you just don't know how much of it is GroupIII. I do wonder about the composition of my Redline "PAO/Ester base". Which is it? And is that all it is? I also wonder what Amsoil is actually using because their own website is pretty devoid of this info.

 

[schmeky]

^^^ Dead on point ^^^

I have spent time disseminating modern engine oils and Mike pretty much summed it up quite succinctly.

 

[SheepDog]

Motul also uses POA Ester formulations. Still doesn't meet the newest API SQ (or at least not on the label) but is another great choice. Honesty, these Coyotes really don't seem to be too picky or hard on oil. Choose a good quality oil, change it frequently. Otherwise, who cares.

https://www.amazon.com/Motul-109776...6a9b762e26fecaf135&qid=1777387604&sr=8-1&th=1

 

[Pistol_91]

Honesty, these Coyotes really don't seem to be too picky or hard on oil. Choose a good quality oil, change it frequently. Otherwise, who cares.

This

 

[Five_OhGT]

Either Motorcraft 5W50 or Amsoil 5W50

 

[Slow Yote]

Penz Platinum Euro 5W40 but have been looking to see if there are any better.

 

[Grimreaper]

HPL (high performance lubricants) 5w40 or 0w40
HPL Euro

Or the super car variant.

Very high quality base oils and add packs. Fleet use pushes these oils out to 20k+. Few individuals on bitog taking the oil the full distance with oil samples to 30k+ on one change. Several report heavy track use at 260+ oil temps and still run 10k oci. Owner will chat with you if you have a question via email about your specific application or have technical questions.

Quietest I've ever heard the engines I use it in. Coyote tick disappeared with out ceratec for the first time in my ownership after 100 miles on a fresh change too. Most consistent hot oil pressures I've ever had and no ceratec. Other euro oils would hold higher pressure for few hundred miles after oil change but quickly drop and settle to a lower reading after spirited driving. Almost like you were seeing it sheer. HPL been in the sump a year and same hot oil temps as day one. Plan to run it two years per change at this point. They run sales few times a year and there's a discount code floating around bitog too.

 

[Stage_3]

Not a Whipple supercharger, but a Roush supercharger.
I use Mobil 1 full synthetic, 5W-50.

 

[RTR077]

Liqui Moly 5w50, Those Germans know their stuff

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