[Healeys] Oil grade for 100

[gradea1 at charter.net]

AGREE-STOCK UP ON OIL! I'M SET FOR A FEW YEARS WITH THE 20-50 BUT THE
STORE I PURCHASED IT FROM WAS HAVING A CLOSEOUT SALE. BEST CLUE TO
ZINC RICH OILS IS THE SAE LABEL ON THE BOTTLE. SN=NO ZINC. (not
literally) But oils with SL or lower ratings do contain zinc...the
lower the SAE series the more the zinc. 
If you find some old oil, its good. Modern day zinc oils come from
Moss or Joe Gibbs costing $10/qt. or more Early VR-1 had lots of zinc
but later ones have reduced the content. Someone on the list has a
chart of all this with values-discussed many times over the years. 
It would be good to hear back from those folks using synthetics to see
what leak issues they have/or not- as Gary notes. I use Permatex,
Hylomar, etc. and still see some "seepage", especially when a car sits
out the pandemic. Hank

	-----------------------------------------From: "Bob Spidell via
Healeys" 
To: "healeys at autox.team.net", "ryan at jimryan.com"
Cc: 
Sent: Monday March 21 2022 9:07:35AM
Subject: Re: [Healeys] Oil grade for 100 Le Mans

 Oh boy! Another oil thread!

 Now that synthetic is no more expensive than mineral oil, in some
cases cheaper:

 
[1]https://www.costco.com/kirkland-signature-5w-30-full-synthetic-motor-oil-5-quart%2c-4-pack.product.100690432.html
[2]

 ... I use it in my more modern cars and newer lawn/farm appliances.
The tractors and the '46 Chevy truck get mineral 10W-40, just because
full-syn 10W-40 isn't common and, well, that's what my dad always put
in them. However, until _proven_ otherwise I think flat-tappet engines
need ZDDP (although some claim syns work as good or better to protect
cam lobes--I'm not convinced). From what I've seen and read, ZDDP is
verboten in lower-vis oils, because they're what's spec'd in newer
cars with catalytic converters. Only 20W-50 is claimed to have
'sufficient ZDDP for flat-tappet engines;' Valvoline VR-1 even says it
on the label. A few years ago. VR-1 suddenly disappeared from parts
store shelves with no explanation given, then reappeared a couple
years later. I'm no longer able to buy VR-1 online, but a local
Autozone still has some on the shelf so I stocked up. I think, with 9
filters and enough oil for 9 changes with top-ups I've got a
near-lifetime supply. My guess is California will ban it outright at
some point and, my rule-of-thumb is: "If California banned/is banning
it it must be good" (see: 3M adhesive remover, Floway, mineral
spirits, effective engine cleaners/degreasers, etc.).

 Bob

On 3/21/2022 7:06 AM, warthodson at aol.com wrote:
  This seems to be a common opinion that unfortunately is not based on
science. I use synthetic oils of the correct viscosity & I do not
experience leaks. A well build engine & transmission/overdrive do not
have to leak. Sealants need to be applied to clean dry surfaces. Gary
Hodson

 -----Original Message-----
 From: Douglas Barker via Healeys 
 To: Jim Ryan ; Bob Spidell 
 Cc: healeys at autox.team.net 
 Sent: Mon, Mar 21, 2022 8:37 am
 Subject: Re: [Healeys] Oil grade for 100 Le Mans

   In my humble expérience the synthetic always leasing more 

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Links:
------
[1]
https://www.costco.com/kirkland-signature-5w-30-full-synthetic-motor-oil-5-quart%2C-4-pack.product.100690432.html
[2]
https://www.costco.com/kirkland-signature-5w-30-full-synthetic-motor-oil-5-quart%2C-4-pack.product.100690432.html
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