barnett468

If the connections were clean and only lightly tightened, they would easily have a good enough connection, in which case the culprit would have been that one or both of the cables were too small or an original cable with a weak connection on the end fitting was used.

I sent you I sent you a private message. .

Yup, quite obviously bogus bidding if one understands how ebay's bidding works.

So that's why they call it a "drain" plug!

From an engine builders standpoint, I really don't know why they would run a non detergent oil, but if they do, they should change it frequently whether they drive the car much or not.

That is quite obviously not the norm and doesn't occur under normal use and normal maintenance etc.

What additive do you use, and why not just buy oil that has something similar to what you want if it is available?

Yes I know, so on those there is no need to worry about pieces breaking off of the head and plugging an oil drain port.

I have been building engines for around 45 years and do it for a living as part of my job, and I have never, ever, seen "sludge" build up anywhere other than on the head or in the oil pan, unless it is an inline engine that has the lifters on the side of the block, in which case I have seen some minor "sludge" there, and I have disassembled engines that had 1/4 thick buildup caked onto the top of the cylinder head.

If someone wants to run a low detergent oil that has high levels of zinc, one option is Valvoline "Not street legal racing oil". The quote from them below is old, and the last time I checked with them, their VR1 contained 1250 zinc and not 1300. "Valvoline VR1 Racing Oil contains .13 percent zinc and .12 percent phosphorus compared to the Valvoline "Not Street Legal" Racing Oil, which contains .14 percent zinc and .13 percent phosphorus." https://www.valvoline.com/about-us/faq/racing-oil-faq The majority of "sludge" in an engine is on the top of the cylinder head and bottom of the oil pan, so in general, the worst case scenario is that some hardened chunks of build up break off the head and completely plug up the return port that allows the oil to drain back into the pan. If someone is concerned about this happening, they can simply remove their valve cover and inspect the top of the head for caked on deposits etc. Any debris in the pan is filtered small enough by an oil filter (if the engine has one) that it is impossible for it to plug any other passages.

Here's a statement from Valvoline I just found online for you. "Keep in mind that zinc additives are corrosive above certain levels and can harm your engine. Valvoline doesn’t recommend using third-party additives to boost the zinc level. If higher zinc levels are required for your engine, we recommend using Valvoline VR-1, and always remember to consult your vehicle’s owner’s manual." https://www.valvoline.com/about-us/faq/racing-oil-faq

What jay does or does not do is completely irrelevant and sometimes not the best thing to do. You should NOT put additives in your oil, it's that simple. Also, the fact is that ALL engine oils I am aware of have ZDDP in them, including the ones approved for cars with catalytic converters. They simply use less zddp in the oil for cat cars than they do in their non cat car racing oil lines etc. .

It has been determined to attack the metal as I stated. It wasn't an opinion or a guess. You can find this out by doing your own research, because unfortunately, as I mentioned, all this info is in my other computer, however, in a quick google search I found a scientific paper that states, " The experimental results confirmed that phosphorus has a deleterious effect on the corrosion resistance of carbon steels in H2SO4 solution as a result of the higher hydrogen activity.". This obviously isn't the same metal or same circumstance as it being used as an additive in oil for an engine, but the end results are similar. https://corrosionjournal.org/doi/abs/10.5006/1.3524835 You may or may not get an accurate answer form Lubrizol, who is the largest supplier of engine oil additives to the engine oil mfg's, or from Blackstone Labs, but you can call them and ask. ZDDP is a bit like drinking alcohol. Too little doesn't have much affect at all and too much can be seriously detrimental. .

All types of engines benefit from some zddp, especially higher performance ones. Zinc is nearly useless in oil on its own. It needs a carrier which is why they add Phosphorous to it. Some of the oil mfg's are now using Boron instead of phosphorous, and although they still refer to this combo as ZDDP, I call it ZDDB which is actually correct. .

Yes, and you may find it online, but if I recall correctly, it is more than 118 f. I have a ton of info on oil including that, but it is in my other computer that died. bobistheoilguy.com has more info on oil than you will find anywhere. .