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What would you guys recommend as the best Engine Oil replacement - I've seen a few recommended, but thought would get some opinions. Running an original Mk3 spit, never been bored or skimmed.

What would you guys recommend as the best Engine Oil replacement - I've seen a few recommended, but thought would get some opinions. Running an original Mk3 spit, never been bored or skimmed.

oo forgot to add, while running had noticed some steam? / exhaust coming off the engine, I initially thought it was just the dust burning from the manifolds. So after a quick clean up and spray from the Jizer what can I see..... a crack that has been welded (badly) and has cracked again, and another crack. Dam, new manifold as well now! woo! Can anybody recommend a decent place to get a new one?

UPDATE - Fuel Pump defo over-rated for the application!!! why do they do that!! Quick fix, volume of pump chamber is more or less exactly the same as original, so just need to replace spring!  and would you believe it, the new springs are twice as long as the originals.  Quick swap and hey presto regulated the flow back to 2-3 psi! New floats arrived today-fitted to Carbs, and wow! no more fuel leak!! Now for the fun stuff!  Got her running for a good 5 minutes and then checked the oil level, omg! full of bubbles!! now to me that screams water in the oil - checked the radiator and the water level has gone down - c**p now the head gasket has gone? Is there anything else I can do to check if  need to replace the gasket?  compression of cyls 1,2,4 all look good, round 140-160 PSI. although 2,4 spark plugs were wet.  (couldn't get to 3 with the distributor on, and didn't have time to drop it.) Any help please! James

UPDATE- stopped leaking from pipes, now leaking from the vent holes! improvement in my eyes! replaced spring in Lift-pump to reduce pressure - seems to have worked. replaced needle valves and made sure of 3.175mm gap still getting a leak thou - is that 3.175 critical? or if it was lower does that make a difference?

Right, so fixed all of the Ignition problems (previous post) now I can get it running but after a few seconds it develops a leak from the Float Bowl connections. Original Fuel Pump was shot, so replaced with equivalent to OE part 208493. from Classic Parts Trader from Ebay. Not sure if this is where I have made my mistake - but part looks exactly as the one from Rimmer Bros. Ive got all Fuel Clips as tight as they will go but still leaking - i've checked all of the spigots, and no gouges or anything, and have been cleaned of all rubbish. Anybody any ideas?

Eventually managed to fix it all, and now running fine, except for fuel leaks where I have replaced the rubber hoses going into the Carbs!  ended up with new Coil, points & Condenser!

Right - first post, after getting my Spitifre Mk3 - yay! So recently decided that i needed a hobby! always fancied a Spitfire so thought why not! its the summer lets have some fun! Having just redone all the Clutch, fixed up the Starter Motor and rebuilt the carbs, i thought right lets try and fire her up! but to my dismay I'm not getting any sparks at the plugs. I'm trying to work out the best way to diagnose the problem so thougt I would get on here and ask what people think is best to do, and where is best to start. can anybody please help?