[Healeys] Oil grade for 100 Le Mans

[Al Fuller]

Ditto, on all points!

 

Al Fuller

Fuller Compliance, Inc.

Quality Systems, Software Quality, Validation + 21 CFR Part 11

 

From: Healeys <healeys-bounces at autox.team.net> On Behalf Of richard mayor
via Healeys
Sent: Sunday, March 20, 2022 5:02 PM
To: Michael Salter <michaelsalter at gmail.com>
Cc: healeys <healeys at autox.team.net>
Subject: Re: [Healeys] Oil grade for 100 Le Mans

 

Michael,

 

I use 20w-50 in all of my classic car engines.  Now, if I drove them in the
winter time I would probably consider the 10w-40 option as it would have the
lower 10W viscosity for those cold morning start ups.  So you are fine. 

 

Richard

 

 

Richard Mayor

boyracer466 at gmail.com <mailto:boyracer466 at gmail.com> 

 

 





On Mar 20, 2022, at 1:50 PM, Michael Salter via Healeys
<healeys at autox.team.net <mailto:healeys at autox.team.net> > wrote:

 

IMHO Michael that will be absolutely no problem. 

 

M

 

On Sun., Mar. 20, 2022, 4:45 p.m. Michael Oritt via Healeys,
<healeys at autox.team.net <mailto:healeys at autox.team.net> > wrote:

Through a stupid mistake on my part today I purchased eight quarts of 20w50
synthetic Amsoil rather than the 10w40 I normally use year-round.
Unfortunately I discovered this mistake this afternoon only after I
completed the oil/filter change.

 

I am concerned that this higher-viscosity oil might in some way damage my
engine.  It has been about 60-70K miles from the engine's having been
professionally rebuilt and while oil pressure has fallen somewhat over the
last several years the gauge still indicates about 40 psi at 2500-3K rpm's
and about 20 psi at fast idle with 10w40, in both cases with hot oil and at
normal engine operating temperature.  I took the car for a very short spin
after completing the change and I am quite sure I did not did not get the
oil up to full operating temperatures but in any case the OP did seem a few
psi higher than what I am used to seeing

 

At this point I have about $125.00 invested in the mistake:  seven quarts
and a new K&N filter.  If my fear is verified by your opinions I am
certainly willing to drain and refill--I certainly do not want to be driving
around if there is a real risk of causing damage. 

 

I eagerly await the group wisdom.

 

Best--Michael Oritt

 

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