Tom928

Concerning anti-seize compunds, I have seen posts that recommend the Lubro Moly LM-508 compound and some that recommend the Permatex copper.

Is one of these preferred or advantagous to use on the 928 engine (Im doing the TB/WP) or is it just personal preference?

Thanks in advance for all feedback,
Tom928

GlenL

Having the right stuff depends on what you're doing. I'll use only the real Porsche stuff on the clutch splines, for example.

As to general-use anti-seize, I called Permatex a few years back about this. Their represenatative said that the regular silver anti-sieze was fine for aluminum engines and to make sure to use a goodly amount. There's some concern about the carbon in that version corroding the Al. The salesguy (I figure) said that the silver goop had stabilizing additives and would not corrode the Al.

What's "best" is really subjective. Maybe someone should put two kinds on those always-frozen thermostat crossover bolts, wait ten years, and then give a report!

BC

I have some never seize that I use on all non-engine related parts.

It is the nickel kind, as I did research when I bought the (very expensive) can about 2000 or so, and nickel was the best choice for steel and AL.

No for engines and stuff, like rod nuts, head bolts, cradle bolts, there is no never seize used at all.

For the TB, WP stuff, I used neversieze, and "never" had a problem.

Jim M.

Just an FYI on Antiseize: Copper antiseize (C5-a) copper and graphite in high quality grease. Protects metal from corrosion, galling and seizing at temps to 1800°F. Zinc antiseize: Protects aluminum and ferrous surfaces from seizure and corrosion up to 700°F. Silver antiseize: Heavy-duty, temperature-resistant, petroleum-based lubricant compound fortified with graphite and metallic flake. Inert, will not evaporate or harden in extreme cold or heat up to 1600°F. Nickel antiseize: Copper-free. Recommended for stainless steel and other metal fittings. For preventing corrosion, seizing and galling in harsh chemical environments and temperatures to 2400°F. Zinc works well, and it mentions its use for aluminum, but the copper free nickel is a good choice too. Used on lug nuts, brake caliper bolts, spark plugs various front of engine bolts (except for water pump, which will use low-strength anti-seize). Not all antisieze is compatible with O2 sensors. If it has Nickel, it can trash the O2. Call Bosch 800 # for advice. Optimoly HT - Copper Antisieze, Optimoly TA - Silver Antisieze, Molykote U - Dry Graphite Molybdenum.

Jim Mayzurk
93 GTs 5-spd

Tom928

Thanks guys for the feedback.

Glent - Did anyone at Permatex say anything about the copper based product? I ask because thats what I have and was wondering if it was good enough or if I should go with the Lubro Moly LM 508. I know both are copper based products.

BrendanC - which Never Seize product do you use? I found the Nickel and Blue moly products? Also where do you get it? Mail order or local dealer?

Jim M. - Thanks for the FYI - It sounds like Nickel Anti-seize is the product to use on just about everything outside the engine. I am considering replacing my old water pump bolts with hex head stainless steel. I heard this is a good thing to do to keep the bolts from corroding in the block and they come out easier?

I am curious why you say to use a low-strength anti-seize rather than the nickel for the water pump?


Does anyone have any feedback on the Lubro Moly LM 508 Anti-Seize?

tv

CYCLO anti sieze contains graphite, copper, AND aluminum. I use it in the block.

GlenL

Tom,

Didn't ask about the copper. I was investigating whether the plain stuff was good enough, some say it's not. I'd think the copper was fine if not better.

I appreciate Jim's post on this. Good info there.