[FC] Oil additive??

Mon Sep 29 10:57:15 EDT 2008

Does that mean that the original specifications as to oil weight are no 
longer applicable?  thanks
----- Original Message ----- 
From: "Ken Hand" <vairmech at aol.com>
To: <corvanatics at corvair.org>
Sent: Monday, September 29, 2008 10:44 AM
Subject: Re: [FC] Oil additive??

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> 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;
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> (Oil viscosity at operating temperature (100° C) required by engine design
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> SAE viscosities to choose from
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> 5.6 cSt – 9.6 cSt 0W-20, 5W-20, 20
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> 9.3 cSt – 12.5 cSt 0W-30, 5W-30, 10W-30, 30
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> 12.5 cSt – 16.3 cSt 0W-40, 5W-40, 10W-40, 15W-40, 40
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> 16.3 cSt – 21.9 cSt 0W-50, 5W-50, 10W-50, 15W-50, 20W-50, 25W-50, 50
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> As an example, the 1960 Corvair Service Manual recommends SAE 10W-30 or 
> SAE 30 for most operating conditions anticipated.)
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> 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.
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> 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.
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> Thanks
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> Ken Hand
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> 248-613-8586
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> www.corvairmechanic.com
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> -----Original Message-----
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> From: J R Read_HML <hmlinc at sbcglobal.net>
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> To: corvanatics at corvair.org; Ken Hand <vairmech at aol.com>
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> Sent: Mon, 29 Sep 2008 12:59 am
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> Subject: Re: [FC] Oil additive??
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> 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?
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> Later, JR
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> ----- Original Message ----- 
> From: "Ken Hand" <vairmech at aol.com>
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> To: <corvanatics at corvair.org>
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> Sent: Sunday, September 28, 2008 11:19 PM 0A
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> Subject: Re: [FC] Oil additive??
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>> ???? 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.
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>> ??? Sorry, not a big fan of anything Mobil oil.
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>> Ken Hand
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>> 248-613-8586
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>> www.corvairmechanic.com
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>> -----Original Message----- 
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>> From: Bryan Blackwell <bryan at skiblack.com>
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>> To: Ben and Lynn Stiles <lbstiles at verizon.net>
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>> Cc: corvanatics at corvair.org
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>> Sent: Sun, 28 Sep 2008 6:28 pm
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>> Subject: Re: [FC] Oil additive??
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>> FWIW, here's what Mobil has to say on the subject:
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>> http://www.mobiloil.com/USA-English/MotorOil/Car_Care/AskMobil/
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>> Synthetic_Oil_and_Tappets.aspx
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>> BTW, their 15W-50 still has 1200 ppm of ZDDP, according to their spec
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>> http://www.mobiloil.com/USA-English/MotorOil/Files/
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>> Mobil_1_Product_Guide.pdf
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>> I think they are correct that for an already broken in
> engine, 800
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>> ppm ZDDP is sufficient (if not, there would be *lots* of problems
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>> being reported).  For break-in, however, you probably want more like
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>> --Bryan
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>> On Sep 28, 2008, at 12:55 PM, Ben and Lynn Stiles wrote:
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>>> FC friends-
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>>> I got this from a classic car acquaintance. Does this have merit?
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>>> Should I
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>>> be worried about what I am running in my FCs? (Havoline 20W 50)
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>>> Thanks for any insight. Could the end of enjoying our classic cars
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>>> really be
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>>> coming?
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>>> Ben
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>>>> The ZDDPLUS (Zinc/Phosphate) additive is now in stock.  The EPA is
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>>>> requiring oil manufacturers to eliminate this additive in lubricating
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>>>> oils as it shortens the life of a catalytic converter.  Oils with the
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>>>> API rating SM do not have adequate amounts of Zinc and Phosphorus
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>>>> needed
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>>>> to prevent the cams & tappets from failure in engines manufactured
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>>>> prior
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>>>> to the 1990s.
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>>> _______________________________________________
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>
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>>> This list sponsored by the Corvair Society of America, http://
>
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>> _______________________________________________
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