Factory rec for the tr3 was 30w, before multi-grade oils. I use 20-50 that
pretty much covers the bases for most people in most applications.
Sent from mobile Bill
On May 14, 2012, at 5:01 PM, Robert Jones <rjones at wfeca.net> wrote:
> While we are at it, what is the best weight to use in a TR3, TR6 & TR8
stock
> engine and why?
>
> Bob
> On May 14, 2012, at 3:20 PM, Mack, Michael (Rochester) wrote:
>
>> Info that I gleaned from various sources. Gathered up into one list.
>>
>> ZDDP Oil Levels
>>
>> Desired range of ZDDP is 1200-1400. Levels over that is too corrosive, for
>> Racing engines Only.
>>
>> Valvoline VR1 race oil has up to 1300 PPM
>> Castrol SYNTEC 20/50 full syn has 1200 PPM. Make sure label says
> "recommended
>> for classic cars"
>> Red Line Synthetic has 1300 PPM
>> Brad Penn Grade 1 racing oil is a mineral oil with 1500 PPM
>> Classic Car Motor Oil made by DA Lubricants to specs for the Indiana
region
> of
>> the classic Car Club of America has 1500-1600 PPM
>> Swepco 306 20w-50 has 1400 ppm
>> Mobil 1 Full Synthetic 15W-50 Silver Cap @ 1200 ppm
>> Summit Racing oil has 1800 ppm. Made by Spectro Oil for Summit
>>
>> Mike Mack
>> 80 TR8 FI DHC
>> 73 Stag - w/Chevy 350
>> 79 Spitfire
>> 70 GT6+
>> --
>> Forwarded via the TR7/8 mailing list. Please send administrative requests
>> to the majordomo at tr8-request at mercury.lcs.mit.edu
>
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