Fuel and oil for 2.25 petrol S2a

[bentleighboy]

Greetings all!
This is my first post. Have just bought my 4th LR but finally took the plunge as one of those is a 1964 2a SWB, and thought I might need some extra help!!
Couple of questions: We all hear about the benefits of modern 98 octane, with its cleaning additives etc etc. Is there any good reason that it shouldn't be used in a 2a (after adding valve protectant) apart from cost?
Similarly, what oil are people using. I don't think the oil consumption is excessive although no long trips yet. I think the Penrite website says "classic" 20/50 but the manuals something like 10/40... lots of good modern oils in that range eg Magnatec.
Have a good weekend,

[Blknight.aus]

use any fuel that resembles unleaded that you like but depending on the engines condition you may need to run a valve saver oil or mix a touch in to lube the valves up. (thats part of what the lead in super used to do) if you retune the engine to run on the lower grade fuel you wont get any advantage out of the higher grade stuff and if you retune to suit the higher grade stuff if you go back to the low grade fuels you either have knocking or the requirement to retune BUT you can get a bit better performance from the engine.

use pretty much any oil from 5-40 up to a 30-70 depending on condition but I've almost exculsively run a 15/40wt oil in the engine and stock 80/90 in everything else.

[JDNSW]

The engine was designed to be run on a wide range of petrols, and was, in fact, sold in Canada without any precautions or problems during the period that only unleaded was available.

It will quite happily run on any petrol sold in Australia today, although for best results timing should be adjusted to suit the octane rating. Valve protectant is unnecessary unless you are almost exclusively driving at freeway speeds.

Unless compression ratio has been raised substantially there will be no benefit in using 98 octane - it is most likely 7:1 compression. Even if it is 8:1, there will be little benefit.

Oils - as Dave says, follow the grade recommended in the handbook, but remember that even the cheapest oil is vastly superior to the best available when the engine was designed.

John

[bentleighboy]

Fantastic Black Night and Swaggie, thanks for your advice.

[Series3 GT]

I just use any petrol I can get my hands on and put some Flashlube in it. As for oil I use Castrol GTX 15W-40 and it runs fine with that.