Diesel Oil

[Mark E.]

Re: Diesel Oil

Thanks Duke; very helpful. Although it may not be evident from my posts, I have read, and found informative, your oil article. But that was years ago, and I've slept since.

As a layperson, my lingering concern about using diesel oil is whether its additive package and overall formulation is best for spark engines. This may or may not be a valid issue, but that's why I sought an affordable spark engine oil for street use with the right levels of Zn and P.

Note that Mobil 1 15w-50 is NOT racing oil.

[Gary C.]

Re: Diesel Oil

Gentlemen,
I purposely stated 5W-50
I purposely stated API SP rating only
No, it is not 15W-50
Simple search on Google found the PDS (Product Data Sheet) for this new oil from Mobil:

https://www.mobil.com/en-us/passenger-vehicle-lube/pds/na-xx-mobil-1-supercar-series

Another simple search for May 2022 product guide sheet, searched by "Mobil 1 product guide 2022" in Google:

https://www.mobil.com/lubricants/-/media/project/wep/mobil/mobil-row-us-1/pdf/mobil-1-engine-oils-product-guide-sheet--may-2022.pdf

[Mark E.]

Re: Diesel Oil

Gentlemen,
I purposely stated 5W-50
I purposely stated API SP rating only
No, it is not 15W-50
Simple search on Google found the PDS (Product Data Sheet) for this new oil from Mobil:

https://www.mobil.com/en-us/passenger-vehicle-lube/pds/na-xx-mobil-1-supercar-series

Another simple search for May 2022 product guide sheet, searched by "Mobil 1 product guide 2022" in Google:
https://www.mobil.com/lubricants/-/m...--may-2022.pdf

I hadn't seen this product before. I like the 5W-50 viscosity (although as Duke mentioned in the past, 15W-50 should be thin enough for most cold starts) and it's interesting Mobil is offering a new street oil not rated for catalytic converters. The only downside I see is the price- about $10/quart compared to less than $6/quart for 15W-50 (5 quart bottle).

[Duke W.]

Re: Diesel Oil

How about three bucks a quart for 15W-40 CK-4?

Duke

[Mark E.]

Re: Diesel Oil

How about three bucks a quart for 15W-40 CK-4?

Duke

Point noted. It's a value question- is it worth an additional $3 to $7 a quart to have an oil that's synthetic and formulated for spark engines? A question for the owner to decide.

[Roger W.]

Re: Diesel Oil

I did not take this article too seriously. I think that most of the members on this forum have been using diesel oil in their old Corvettes and I have yet to hear of anybody having a engine wear problem due to using diesel oil..

[Gerald C.]

Re: Diesel Oil

How about three bucks a quart for 15W-40 CK-4?

Duke

So if I use Rotella 15w-40 with the Ck-4, I should be able to use it in my 63 small block without issues??

Thanks

[Duke W.]

There is no need to buy a specific BRAND of oil! As I have said countless times before, API certified oiIs are essentially a generic commodity. They all have to meet the same API certification tests, and the rest is just marketing hype. I buy the least expensive 15W-40 CK-4 oil available at Walmart, which is usually their SuperTech house brand. Of course, Walmart does not blend oil. Like the dozens of other "house brands", Walmart contracts with a blender that has a certified CK-4 blend, like the dozens of other "house brands" out there that you typically find in farm country. For all I know it could actually be Delo, Delvac, or Rotella the major big oil company brands.

I have two vintage cars with sliding surface valve trains that need oil changes in the near future, and between the two they need about 10.5 quarts. So mid-morning on Saturday I ordered from walmart.com one two gallon jug of Walmart's SuperTech house brand 15W-40 CK-4 ($25.84) and a one gallon jug ($13.47) along with a small can of DOT 4 brake fluid (also their SuperTech brand), a can of silicone spray lube, and a 40 oz. bottle of Spectracide weed killer concentrate. Yeah, the price is up since the last time I bought due to bidenflation.

Shipping was free, and the box arrived on my doorstep, yesterday, Sunday, about 24 hours after I placed the order. Who needs Amazon Prime?

Duke

[Don H.]

Duke,,

what's the weight, Zinc and Phospho content of the Spectracide, and which of your two vintage cars take that?

[Duke W.]

Spectracide is 0W-5 and is phosphorous and zinc free because the California Coastal Commission and Air Resources Board considers those elements to be an inhumane way to kill weeds, but there's at least one waiver I know of... The "French Laundry" restaurant up in Marin County where our governor hobnobs with lobbyists and cronies

With filter change the '91 MR2 takes 4.25 quarts. Since the 190E 2.6 has two more cylinders, it needs two extra quarts of oil, one for each cylinder. Did I get that right?

If SB 712 becomes law, which means I will no longer have to have them emission tested every two years (with only a few hundred miles accumulated since the last test) I will never have to change the oil again. The only reason I've changed it in the past is that I read on the internet that if you don't have fresh oil in the engine it will probably fail the emission test.

Duke

[Steven B.]

Spectracide is 0W-5 and is phosphorous and zinc free because the California Coastal Commission and Air Resources Board considers those elements to be an inhumane way to kill weeds, but there's at least one waiver I know of... The "French Laundry" restaurant up in Marin County where our governor hobnobs with lobbyists and cronies

With filter change the '91 MR2 takes 4.25 quarts. Since the 190E 2.6 has two more cylinders, it needs two extra quarts of oil, one for each cylinder. Did I get that right?

If SB 712 becomes law, which means I will no longer have to have them emission tested every two years (with only a few hundred miles accumulated since the last test) I will never have to change the oil again. The only reason I've changed it in the past is that I read on the internet that if you don't have fresh oil in the engine it will probably fail the emission test.

Duke

Duke, I have to agree on the Spectracide specs. On a trip to Walmart recently I competitively shopped and checked the Roundup and Roundup Concentrate specs and although more expensive their specs met the NLA (National Lawn Association) minimum specs. Their additional pricing I am sure indicates more effectiveness and higher quality per their marketing departments. My experience with marketing is if they say it it has to be true. At a local farm store I did find brands such as Green Gobbler (yes, it is real) and FarmStop with specs exceeding NLA! There is a word or caution on all of these products though. It has been proven they each cause accelerated lobe wiping and wall scouring along with overheating. I have contacted each of these manufacturers questioning the amount of their products required to fill my EGO and DeWalt mowers and am awaiting a response. I will continue use of extra virgin olive oil as it seems to reduce unwanted emissions, and omissions, and extends life.