API oil service category update

[Duke W.]

Re: API oil service category update

The answers to your questions are in the engine oil article in the Summer 2008 Corvette Restorer - absolutely crystal clear!

Given your NCRS number you should have it.

Hint - Key words:

Primary service category
Secondary service categories
Applicability of S-category P limitation depending on the winter grade rating.

Now, for the benefit of others, when you rediscover the answers, come back and tell everyone what they are to reinforce their knowledge.

Duke

[Scott O.]

Re: API oil service category update

Duke,
What is the shelf life of a sealed jug/bottle of oil. In otherwords can one stock up with CJ 4?
Thanks, Scott

[Duke W.]

Re: API oil service category update

Estimates vary, but I would not buy more than a three year supply. Additives are held in suspension, but over time there is some "drop out".

I recall having a quart of old oil that someone left with me. It was maybe ten years old. I finally used it for top-off, but I noticed a thin dark film at the bottom, which was probably additive drop out.

If the time comes when the C-category spec limits P to below 1000 ppm, we may want to add some ZDDP-rich additive to bring it back to near 1200, but I don't think that day is coming anytime soon.

Duke

[Dick W.]

Re: API oil service category update

I hit a home run on Rotella a few months back. Tractor Supply opened a new store here and was running a special on cases of Rotella. I bought 16 cases for less per gallon that Wally World CJ oil. Over a dollar a gallon cheaper that I had been able to find it in drum quantities

[Duke W.]

Re: API oil service category update

How long is it going to take your to use 16 cases!?

Duke

[William G.]

Re: API oil service category update

Duke,

My apology for asking an apparently dumb question. To make a long story short I don't have back issues of NCRS publications........so I cannot read the issue you are referencing and "report back". Years ago I was a member until I sold a C3 I then owned. C2s were too expensive for my pocketbook, but........last year I came to the realization that a C2 was on my "Bucket List".......cost be damned. Therefore, "here I am again". Again my apologies. In the years I didn't own one of GMs finest I let my NCRS membership lapse as I thought I'd never own a Corvette again. There.........I've gone and made it a long story anyway. In the future I'll try to refrain from asking dumb questions......no guarantees, you understand.

[Dick W.]

Re: API oil service category update

How long is it going to take your to use 16 cases!?

Duke

Couple of years at the most. Truck takes 4 gallons at a time. Plus the other stuff around here.

[Duke W.]

Re: API oil service category update

Duke,

My apology for asking an apparently dumb question. To make a long story short I don't have back issues of NCRS publications........so I cannot read the issue you are referencing and "report back". Years ago I was a member until I sold a C3 I then owned. C2s were too expensive for my pocketbook, but........last year I came to the realization that a C2 was on my "Bucket List".......cost be damned. Therefore, "here I am again". Again my apologies. In the years I didn't own one of GMs finest I let my NCRS membership lapse as I thought I'd never own a Corvette again. There.........I've gone and made it a long story anyway. In the future I'll try to refrain from asking dumb questions......no guarantees, you understand.

You can read it here - starts on page 3:

http://www.westcoastwillys.com/WCW_Sept08_small.pdf

Duke

[Scott O.]

Re: API oil service category update

I bought a 5 quart jug of Motorcraft CJ-4 today at Walmart for $14

[Jim R.]

Re: API oil service category update

Duke Thanks for the valuable info.

[Michael J.]

Re: API oil service category update

I bought a 5 quart jug of Motorcraft CJ-4 today at Walmart for $14

I finally saw some for sale at Auto-Zone too. 5 qts. jug of Motorcraft for $13.99. I guess Motorcraft is making a run at Rotella.

[Daniel S.]

Re: API oil service category update

Great info...thanks for the heads up!

[Richard M.]

Re: API oil service category update

Ivote this thread becomes a "Sticky" until .........whenever.

Anyone else??????

Thanks for keeping us updated Duke. I just did a oil search here for a buddy and this showed up on top of the search list........Rich