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Discussion Starter #1
just drained the complete brake and clutch system in my 69 spider and was about do buy some regular dot 3 fluid from autozone, nothing fancy...just the autozone brand

the salesman there told md that all brake fluid is now synthetic (including dot 3)

I know enough not to use silicone type in my car, but unsure about what's in the synthetic.....

so I'm a bit confused...any suggestions would be appreciated
 

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Trained (ex)Professional, , 1953-2018 RIP,
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DOT 3 & 4 brakefluids have been synthetic since forever as far as I know. Any off the shelf DOT 3 will work fine. Some folks, myself included, prefer the higher dry and wet boiling points of DOT 4. I've always had good results with Castrol LMA.
 

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I like Castrol LMA as well, use it on everything except the track car for which I use ATE Gold (used to use Super Blue until they took it away!).

Kevin
 

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For years now I've used Valvoline Dot 4 in all my cars because Castrol is no longer carried by the local parts.
 

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Don't confuse synthetic with silicone.
 

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Allow me to mention my favorite: ATE Super Blue Racing DOT 4. Most recently I bought a liter of it for circa $15 on Amazon. ATE fluid for ATE brakes, it has always made sense to me.

Bob
 

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Discussion Starter #7 (Edited)
thanks everyone..i was confusing synthetic with silicone

can anyone give me an estimate on how much I will need to fill both the brake and clutch system in a 1969 spider...I understands I will need a bit extra due to bleeding both systems

I've looked around for the Castrol product....anyone know where I could buy it in southern California...if not i'll go with the super blue from amazon
 

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I bought a case (,12-12oz.) of the new Castrol synthetic dot 4 brake fluid off of Amazon,pt.#12509,now at $31.68,w/prime.The 12oz. containers are a little easier to handle,plus most of what you don't use remains sealed.Don't have a clue as to how much your car will need,but my Giulietta brake bleed took almost six bottles.According to Pegasus auto racing,this fluid was formerly Castrol/Girling LM-GTA.
 

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Discussion Starter #9
Thanks alphil...just bought it from amazon

will use on my alfa and if I have any left over my other cars (sienna and civic) are due for a change...good deal on these from amazon!
 
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