I have 2 dozen bottles of this at home, which I originally used to replace lead in petrol in old cars, and also in a 1998 car to lubricate valve seats, as one valve had gotten stuck, engine needed extensive repairs and mechanic recommended I use Morey's in petrol to prevent further stuck valve.
However a knowledgeable friend of mine now tells me that Morey's Upper Cylinder Lubricant & Injector Cleaner should never be used in modern cars with a catalytic converter, as it can make more harm than good.
Would you use Morey's Upper Cylinder lubricant in a newish car to prevent stuck valves?
peanuts37,
Jul 23, 4:46am
No, no additives needed with modern engines, not really needed with old engines if looked after and well serviced.
intrade,
Jul 23, 4:51am
well what does it say on the bottle. catalyst save?
cjohnw,
Jul 23, 4:55am
Wouldn’t adding such things to a new engine void the warranty?
franc123,
Jul 23, 5:10am
No, they do not require any additives at all. I'd sell it to someone who could benefit from it
grandlancy,
Jul 23, 5:27am
OKOKOK thanks!
nice_lady,
Jul 23, 5:28am
Why should you have to put any additive at all in 'newish' car to prevent stuck Valves ?
kingfisher21,
Jul 23, 5:51am
x1
These were really popular, and worked well, back in the CNG days.
serf407,
Jul 23, 7:08am
Is the carbon cleaner the way to go on newer machinery?
Yes but that was because many/most cars had cast iron heads without steel insert valve seats and when they ran CNG the very dry gas was BAD for them. Few if any of those factors would be relevant now.
dublo,
Jul 23, 2:34pm
This brought to mind the days of the introduction of unleaded petrol! Every snake oil salesman and his dog had a field day selling gizmos to prevent valve seat recession. Some "experts" said use upper cylinder lubricant: well, that lubricated the upper cylinders but got burned up before it got anywhere near near the exhaust valves! Others said add 2-stroke oil to the petrol (same result!) And others sold canisters with tin particles. One of those even had magnets to help the petrol "combuse" (that was a new word I hadn't previously heard!) (The Melbourne University Engineering dept ran controlled tests of all the additives with NZ petrol and found that Valvemaster was the only really effective one.) Back to upper cylinder lubricant: I met an English engineer who specialised in engine oils. He said modern oils did their job perfectly well and additives of any sort were just not needed. He said he could be having a quiet drink in his local pub and would listen to the Hooray Henrys extolling the virtues of X brand upper cylinder lubricant and how it made their MGBs go so much better. He just smiled to himself and shook his head , noting how much better his own car went after he had polished its paintwork!
franc123,
Jul 23, 3:04pm
Some people believe anything they're told. The thing to do with an old engine was to set the valve clearances before switching over to an unleaded diet, run it 10000km and recheck them, it will be obvious if seat recession was occurring. If so, then get the head off and get a machine shop to perform the necessary rework of the valves, seats and guides, renew the seals and gaskets that probably needed doing anyway, bolt it back together and forget about it. Many of these 50s and 60s engines that, unless modified for higher compression, had been unnecessarily using the old leaded super for many years when 91 could have been used. I remember vigorous defence of this fuel 24 years ago during the phaseout by ignoramuses who thought it was a good thing for their engines and exhaust systems when it simply wasnt. Lead is the most hideous poison imaginable for cars, people AND the environment.
dublo,
Jul 23, 5:29pm
As usual, franc has hit the nail on the head; sound advice! My 1964, 1970 and 1977 cars do need 95-96 octane fuel, and the '70 one, with its even higher compression, from near new would "pink" unless the ignition timing was retarded 2-3 degrees from standard, until we fitted an electronic ignition system to it which fixed that problem, and none have suffered any valve seat recession problems, let alone required any exhaust system repairs since the introduction of unleaded petrol!
franc123,
Dec 18, 7:05am
x1
Oh yes there was all sorts of theories about as to how tp improve things. Unleaded 96 revealed that some engines needed overhaul, along with their carbs and distributors, regraphing them helped a lot, I think the old Super masked problems and was more tolerant. Old engines were getting a double dose of carbon build up from leaded gas plus oil burning. If you knew what to do and were willing to spend the money wisely it was possible to get better performance and engine life from unleaded.
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