Re: New Owner of 1966 Original Mustang Convertible V8 K-rock
wow that is great!!! Since it's a V-8 it might need the lead substitute. 60s were an era of change. normal 10-30 oil should be alright. the valve seats were different back in the day and needed the lead. the type of fuel isn't too important. though i like running the higher octane in my big blocks. just my opinion... probably a professional should take a look at it.
Re: New Owner of 1966 Original Mustang Convertible V8 K-rock
you might want to get the heads updated to run un-leaded fuel. I had a 65 with a 289 and she would get hot because the heads were never updated to run unleaded fuel. and as stated above, 10-30w should be good. I used it, I would suggest castrol gtx for it, i know my 289 liked it.
nice ride though!
__________________ Past: Michelle, 2006 Mustang GT, Legend Lime,1998 Cobra, Bright Atlantic Blue2007 Mustang GT, Tungsten Grey Present: 2013 Mustang GT, Gotta Have It Green Be sure to check out my Flickr photostream! Ryan's Flickr Photostream
Re: New Owner of 1966 Original Mustang Convertible V8 K-rock
Nice!!!
__________________ -1989 LX 5.0 - 5 speed, OBX long tubes, VRS SS X pipe, MAC catback, Eibach springs, SVE upper/lower control arms a bunch of polyurethane stuff, KYB shocks/struts, Edelbrock Performer intake, Holley 600
-1995 3.8 - True duals(divorced), Flowmaster 40s, Hurst short throw, CAI, EGR/DPFE Delete, 215k + mi(DD)
Re: New Owner of 1966 Original Mustang Convertible V8 K-rock
nice car! As you may know, Convertibles were VERY rare in 1st Gen Stangs, on top of that its a 4 speed AND it has the PONY interior, chances are the later too were retrofitted at some point, if they wernt, you have a GEM and if the numbers match it is even more special and possible worth a good chunk of change.
Re: New Owner of 1966 Original Mustang Convertible V8 K-rock
Just read something this morning in the new Hemmings Muscle Machines about modern oils in older cars. My memory is a littly sketchy but if I recall it said that the new oil formulations have no or little zinc and they listed oils that contain appropriate levels of zinc (at least I think it was zinc that was the problem)
EDIT: Read it in the "ask The Auto Doctor" column in Newsday lol, but I got the info right. Mentions Comp Cam Zinc oil additive and Joe Gibbs' brand
Out of 600,000 Mustangs in 1966, ONLY about 70,000 of them were Convertibles. As you can see the Fastback was even more limited, hence the desirability of them and the Verts. YOu car has the "Luxury" pony interior (12,000) and then if you break it down into 289 V8 it will be even more limited, provided thats the way it was shipped from the factory and even if it wasnt, still a kool car
Re: New Owner of 1966 Original Mustang Convertible V8 K-rock
One Bad A$$ Stang for sure, Welcome to NYM
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New Owner of 1966 Original Mustang Convertible V8 K-rock 
My Vista Blue GT
We want to see some pictures! 
Very nice ride! 
Since it's a V-8 it might need the lead substitute. 60s were an era of change. normal 10-30 oil should be alright. the valve seats were different back in the day and needed the lead. the type of fuel isn't too important. though i like running the higher octane in my big blocks. just my opinion... probably a professional should take a look at it. 
Michelle
1995 Mustang 3.8
Rustang
Vorteched 02 GT
Linear Mode
