[TR] Greenish oil now 50weight?

[John Macartney]

Yes, dear ol' Duckhams is still going. Alongside Castrol Classic 20/50, it's
the other Number 1 choice for the 'ancients.' Still retains the original
properties plus a few other modern ingredients to make it better than ever :)
 
Jonmac

>________________________________
>From: Michael Marr
<mmarr at notwires.com>
>To: Randall <TR3driver at ca.rr.com>;
triumphs at autox.team.net
>Sent: Friday, 30 September 2011, 15:33
>Subject: Re:
[TR] Greenish oil now 50weight?
>
>Back in the day, Duckham's 20/50 was the
recommended multi-grade for most British cars.  I don't know if Duckham's
exists any more - Johnmac?
>
>Mike
>
>----- Original Message ----- From:
"Randall" <TR3driver at ca.rr.com>
>To: <triumphs at autox.team.net>
>Sent: Tuesday,
September 27, 2011 8:58 AM
>Subject: Re: [TR] Greenish oil now 50weight?
>
>
>>> what does the list think of running Valvoline 50 weight oil?
>> 
>>
Straight 50 weight is too thick when it's cold, IMO, particularly with a
>>
freshly rebuilt motor.  Back when I lived in a cooler climate, I found that
>>
the oil pressure would go too high (peg the gauge) even with 40 weight.
>>
Pressure too high puts extra strain on the pump drive, and makes leaks
>>
around the filter head more likely.  It's also apt to open the bypass valve,
>> and feed the engine with unfiltered oil.
>> 
>> But 20W50 (which acts like
20 weight when it is cold) might be OK.
>> 
>> -- Randall
>
>
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