[FC] Oil additive??

Mon Sep 29 10:44:13 EDT 2008

      Years ago I used to think just like everyone else that the thicker the oil the better the lubrication, that just is not so. I was actually hurting my engine by using the40 and 50 wt oils that I did.  Now days we have to look at the balance, of chemicals, and oil weight. Diesel oil generally is a 15W-40 and really outside the envelope of the acceptable range as established by the chart in one of the earlier emails, that part I agree with there and also where my thinking on oils has changed over the years as I have become educated about oils and engine wear. 10W-40 oil is on the upper end of the scale as mentioned here;

(Oil viscosity at operating temperature (100° C) required by engine design

SAE viscosities to choose from

5.6 cSt – 9.6 cSt      0W-20, 5W-20, 20

9.3 cSt – 12.5 cSt     0W-30, 5W-30, 10W-30, 30

12.5 cSt – 16.3 cSt     0W-40, 5W-40, 10W-40, 15W-40, 40

16.3 cSt – 21.9 cSt      0W-50, 5W-50, 10W-50, 15W-50, 20W-50, 25W-50, 50

As an example, the 1960 Corvair Service Manual recommends SAE 10W-30 or SAE 30 for most operating conditions anticipated.)

    The above was taken directly from the article, (hope you don't mind), and shows exactly what I am talking about. Now keep in mind what I said about the oils earlier and the ZDDP additive, 10W-30 is considered an energy conserving oil and will not have enough=2
0of the additive where as the 10W-40 oils are NOT considered energy conserving and will have retained a lower dose than we had in years past but still adequate for our engines.  

Now comes the advertisement; For those of you that want to run a true synthetic oil look into the AMSOIL oils, you can order direct and have it delivered right to your door, they even have the Wix filter for the Corvair. If you are overly concerned about the ZDDP additive then look more at the 10W-40 motorcycle oil with the extra added ZDDP. I think you will find that the combination of the synthetic oil and the regular synthetic 10W-40 motor oil will be more than enough for our cars. As a side note, synthetic oils do tend to be just slightly"thinner" than dino oil and you can easily use the 10W-40 in a good running Corvair engine. If you have a tired engine, high mileage, then you can run the 20W-50 because you probably have larger tolerances and the overall requirements of the engine oiling have changed and you should no longer use the recommended oil wt. range.

    Also I am pretty sure that AMSOIL is the only manufacturer of synthetic oils that says you can go 25,000 miles or one year in between oil changes. Yeah I know some others are spouting extended oil changes but no more that what it already says in your owners manual, of newer cars, and they are making it look like they are the ones with the novel idea of extended drain intervals because they have a better oil produc
t. Way back in 1980 my Pontiac recommended 6,000 mile oil changes. You can also run the AMSOIL in your daily cars and probably have a savings even though the initial price is higher for an oil change. If anyone needs to have this explained, I will be more than happy enough to do it privately.

   If any of you do want to run AMSOIL with Wix filters and want to place an order you can go to  https://www.amsoil.com/StoreFront/default.aspx  and then when they ask for a recommending dealer please use my number of 503903.

   Thanks

Ken Hand

248-613-8586

www.corvairmechanic.com 

-----Original Message-----

From: J R Read_HML <hmlinc at sbcglobal.net>

To: corvanatics at corvair.org; Ken Hand <vairmech at aol.com>

Sent: Mon, 29 Sep 2008 12:59 am

Subject: Re: [FC] Oil additive??

I don't (often) buy their gas, but I've had Mobil 1 oil in everything I own 
for 30+ years and have not been disappointed.  However, I'm aware of the 
(relatively) recent change you mentioned.  It is causing me to re-look at my 
choices.  Right now, I'm thinking the "diesel use" oil might be the way to 
go (for the Vairs) on the Mobil One.  Any comment? 

Later, JR 

----- Original Message ----- 
From: "Ken Hand" <vairmech at aol.com> 

To: <corvanatics at corvair.org> 

Sent: Sunday, September 28, 2008 11:19 PM 0A

Subject: Re: [FC] Oil additive?? 

> 

> ???? Keep in mind that Mobil got the SAE standards changed to fit what 
> THEY wanted to do with synthetic oil. Mobil 1 is now 10% dino oil and they 
> still call it synthetic according to the rules. 

> 

> ??? Sorry, not a big fan of anything Mobil oil. 

> 

> 

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> 

> Ken Hand 

> 248-613-8586 

> www.corvairmechanic.com 

> 

> 

> 

> 

> 

> 

> -----Original Message----- 

> From: Bryan Blackwell <bryan at skiblack.com> 

> To: Ben and Lynn Stiles <lbstiles at verizon.net> 

> Cc: corvanatics at corvair.org 

> Sent: Sun, 28 Sep 2008 6:28 pm 

> Subject: Re: [FC] Oil additive?? 

> 

> 

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> 

> FWIW, here's what Mobil has to say on the subject: 

> 

> http://www.mobiloil.com/USA-English/MotorOil/Car_Care/AskMobil/ 

> Synthetic_Oil_and_Tappets.aspx 

> 

> BTW, their 15W-50 still has 1200 ppm of ZDDP, according to their spec 

> sheet: 

> 

> http://www.mobiloil.com/USA-English/MotorOil/Files/ 

> Mobil_1_Product_Guide.pdf 

> 

> I think they are correct that for an already broken in 
engine, 800 

> ppm ZDDP is sufficient (if not, there would be *lots* of problems 

> being reported).  For break-in, however, you probably want more like 

> twice that. 

> 

> --Bryan 

> 

> On Sep 28, 2008, at 12:55 PM, Ben and Lynn Stiles wrote: 

> 

>> FC friends- 

>> 

>> I got this from a classic car acquaintance. Does this have merit? 

>> Should I 

>> be worried about what I am running in my FCs? (Havoline 20W 50) 

>> 

>> Thanks for any insight. Could the end of enjoying our classic cars 

>> really be 

>> coming? 

>> 

>> Ben 

>> 

>>> The ZDDPLUS (Zinc/Phosphate) additive is now in stock.  The EPA is 

>>> requiring oil manufacturers to eliminate this additive in lubricating 

>>> oils as it shortens the life of a catalytic converter.  Oils with the 

>>> API rating SM do not have adequate amounts of Zinc and Phosphorus 

>>> needed 

>>> to prevent the cams & tappets from failure in engines manufactured 

>>> prior 

>>> to the 1990s. 

>>> 

>>> 

>>> 

>>> 

>>> 

>>> 

>> 

>> 

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> 

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