I'm showing my age here but when Mobil 1 first appeared I ran it in my race motor,the oil itself works fine but,the engine was destroyed when the block split(an overbored A12)and water got
into the oil. With a synthetic oil the oil does not foam when there is water in it and I missed the increase in the oil level and broke a rod as a result. For a long time after that I ran
mineral oils until I tied up a sponsorship deal with Castrol who supply all my oil and brake fluid
(SRF silicone race fluid) so when it's free I have to be biased. I have been told that the Mobil 1 formula has been refined over the years and is a great product. Though in closing I know
of 2 Mobil sponsored cars which actually run Castrol RS so it's really up to you. Oh and the RS does foam slightly in the presence of water.

What are your thoughts on Mobil1 vs Castrol RS for an A12 race motor?

sweet!
yeah bro im real keen on that info, and any more you will let me read.
i can send you down some money for photo copying and postage. i will have to drop in next time and show you my coupe, its all
exciting stuff.
flip 12000rpm! good stuff, i also heard a rumour that Datsun used the standard crank, as it is very strong, and a forged one
wasn't nessecery.
thanks, back to the oil, what viscosity would you recomend as a minimum, or the best to use.
thanks a lot,
if its cool to send that info, just send your address or whatever to chris_lott_nz@yahoo.co.nz or toyournana@hotmail.com.
have a choice one.

way cool... how oversized was the bathurst a12, that thing kicked @!$%!!!! those damn class changes stuffed that up in the end though. but getting bac the the motor i think we all
may be interested so could you please explain as much as you can. by the way heres some trivia for ya datsun 1200 won class a bathust in 1970,1971(i think),1972,1973,1976(with a
5speed)but then they changed the engin capacity rules outlawing datto 1200s

Hey good lad, do you burn oil in preference to grass?? Just joking . Back to the far more relevant subject . I have photos and diagrams showing the factory race catch can/breather system
which was developed to cater with the problems created by running the a12/13s to 12000 rpm. The motors were tough as they won their class at Bathurst 6 times but were disqualified one
time cause the team would'nt allow the engine to be stripped in post race scrutineering. This factory owned engine turned up years later in an innocent parties car and it was severely
oversized. Not that for one minute am I suggesting that Datsun cheated!!!!!!!!!! Any way let us know if you want to have a look at the stuff. I'm in Wellington so it's only a stamp away.
PS On the subject of oils I've always run Castrol GTX in all my road motors with no problems. For race motors I won't let anything but Castrol RS in my babies.

no no no no no!
chris is a good lad, see?
i burn fuel not grass!
a good lad chris is! by crikey...
Nah, the tutors a good blokes, one of them uses the A series engine in heaps of his examples, it's all good.
I was just wondering about the use of a catch can, i think mr nismo4 brought it up from memory, do you notice a power improvement, or is it just piece of mind that your
engines not getting that oil gasses and stuff.
sweet.
choice guys.

Hey Chris,
What is it that has been in your mind? Does it contain THC? Seriously though I guess you are at tech doing Auto Mechanical or whatever they call it. It's been 18 or so years since I was at
tech and I remember the majority of the tutors were ol farts only interested in what was for lunch and perving on the secretarial students. But one tutor was a cool guy into Muscle cars who
had a bunch of hardcore Mopars including a rare as Plymouth Superbird which ran 187MPH in the flying quarter a few years ago. Another thing to think about was something my old man suggested
(he was a mechanic) was to be an engineer instead so you could fix and make new bits when replacements weren't available. It worked for me, and I still make heaps of stuff for mechanics who
can't find what they want in a catalogue. Don't bag the tutors too much. They are probably just jealous of you younger fella's anyway.

again, sorry... but it has been playing in the back of my mind since yous mentioned it last month... gotta go faster... :)
please tell me more...
is it legal in NZ? and does it work sweet? like not damage the motor/
I tried to get some information out of my tutors at tec, but they wouldn't tell me, cause they want to teach us how to fix cars not make them faster...
old school thinking dudes...
but sweet, if anyone can tell me more it would be cool.
thanks.