I had a close look at the two rubbers seals at the ends of the sump removed - I couldn't see any evidence of any liquid gasket on them...so maybe nothing is the answer on what to use - only concern is the FSM says to apply liquid gasket material.

Page EM-7
"Apply liquid gasket to oil pump gasket and rear oil seal retainer gasket." - but from the diagram is could just be on the flat ends of these rubber seals...

Finally going to get back to the Datsun after a month or so away.....

Picked up some Loctite Blue Maxx to seal the sump, what if anything do you smear on the two rubber seals (the front and rear oil seals).

I was thinking of using Permatex #3 on both sides of the oil seals - but run the loctite blue gasket maker up to the flat bits on the sides of the rubber oil seals if you know what I mean.

...you know me Mik, just don't have enough of that dodgy she'll be right streak in me yet...I'm getting better at it though!

cant you just leave it like all other datsuns and let the leaking oil form that lovely grit filled sealent goo like it does on all other parts?

either that or let it rust on like an a12 i looked at where it was left in the outdoors with no gasket or goo, he decided to file it flat and bolt it on! either way you wont have to worry about leaks... or getting it off in a hurry.

Just rang Nissan Oakleigh - a tube of geniune Nissan liquid gasket is $63.20, so I might look at the price of a couple of aftermarket options too...

Thanks for all the responses too, have indeed given me a few ideas, it seems most people I've talked to use silicon stuff for sump gaskets by the way.

I highly recommend genuine Toyota sealant, its good stuff for coolant and oil. Its about $35 a tube. 3bond is also real good but pricey and a little harder to come buy.

I go with ultra blue or ultra copper silicons; just give it time to cure -24 hours minimun.

when all else fails use what the manufacturer used, thats why they pay their engineers to come up with this stuff. permatex no3 is good, but cant be used on sumps. first hand experience when one of my mates decide to do that on his 202 hq, good fun watching him clean up brand new oil from absolutley everywhere lol go with silicone stuff. but permatex ultra black didnt work for me. with the proper usage and directions there should be no need for it to block oil gallerys and passages, except where copious amounts are used, or the product hasnt fully cured before being used. resulting in it corroding away into the flowing oil.
but dont let us scare you mildman lol

threebond, toyota or nissan, loctite master gasket is good too
dont trowel it on
permatex good on cork n paper(thats what it was made for) but most late models use no gasket at all
have used sikaflex in the past but it is so strong you will destroy the sump if you need to get it off
dazza

Just remember that the manufactures want to sell more cars and parts. Ford uses loctite in ford brand and normal style. What's the difference you may ask?, money.

As for myself I don't mind the silicone goos but I really try to avoid letting stuff squeeze out and giving it some decent drying time.