[Healeys] Does synthetic oil leak more?

Bob Spidell bspidell at comcast.net
Sun Jan 12 10:58:10 MST 2020

I was leak free for the first 60 years ...

On 1/11/2020 9:23 AM, Ron Fine wrote:
> I was sure I was going to be the first one to have a leak free Healey 
> when I rebuilt my engine/transmission in 2004. It was leak free for 
> the first year or so, but, after that I have the usual drips.  I keep 
> a piece of cardboard under the car to keep track of the leaks.  I 
> assume that age and use just opens up the leaks over time.
> Ron Fine
> *From:* Jean Caron
> *Sent:* Saturday, January 11, 2020 8:57 AM
> *To:* Harold Manifold ; warthodson at aol.com ; 050.rpl at gmail.com ; 
> healeys at autox.team.net
> *Subject:* Re: [Healeys] Does synthetic oil leak more?
> Harold,
> It is possible to have a leak free Austin-Healey, once the oil has all 
> drained out!!!!!!!
> Jean
> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for 
> Windows 10
> *From: *Harold Manifold
> *Sent: *January 11, 2020 10:53 AM
> *To: *warthodson at aol.com; 050.rpl at gmail.com; healeys at autox.team.net
> *Subject: *Re: [Healeys] Does synthetic oil leak more?
> Hello,
> All of your observations are a factor. Here are some comments from an 
> article about synthetic oil leaks:
> Synthetic oil WILL NOT cause leaks. It may however make already 
> worn-out gaskets/seals more evident, by leaking past them, and/or 
> cleaning any sludge and other gunk that was sealing the existing leak. 
> This is because Synthetic oil has much better cleaning properties, 
> flows much better than conventional oil, and hence also lubricates 
> much better than conventional oil (This is a good thing).
> I use a GL-4 synthetic gear oil in my transmission and it leaks. 
> Believe it not not one of the leak mechanisms is from the interior 
> along the bolts and drips from the bolt head on the exterior. I am 
> changing the gaskets on my transmission and trying bonded sealing 
> neoprene washers on the fasteners.
> I may be pursuing the impossible dream of a leak free Healey.... Harold
> *From:*warthodson at aol.com [mailto:warthodson at aol.com]
> *Sent:* Saturday, January 11, 2020 7:24 AM
> *To:* manifold at telus.net; 050.rpl at gmail.com; healeys at autox.team.net
> *Subject:* Does synthetic oil leak more?
> I am not a leak expert, but I find this hard to understand. For there 
> to be a leak there has to be a hole. Is it because the synthetic oil 
> molecules are smaller than the non-synthetic oil molecules? Given that 
> the "holes" come in different sizes this seems illogical. Is it 
> because the synthetic oil is more slippery? How is that measured? How 
> much more slippery is it?
> Gary Hodson
> -----Original Message-----
> From: Harold Manifold <manifold at telus.net>
> To: 'R. Lindsay' <050.rpl at gmail.com>; 'Healey List' 
> <healeys at autox.team.net>
> Sent: Fri, Jan 10, 2020 7:55 pm
> Subject: Re: [Healeys] Rear Axle Oil
> The biggest difference you will notice with synthetic gear oils is 
> they leak
> more than non-synthetic.
> ------------------------------------------------------------------------

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