7 Best Camshaft Assembly Lubricant | Cams Need This, Not Oil

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The go-to for machinists who insist on a filter-friendly film that does not clog.

You get 12 fluid ounces of synthetic chemistry here — 12 fluid ounces versus the Lubriplate’s 10 oz tube, which means you can coat an entire rotating assembly plus timing chain without rationing. Owners mention using it on a 2.4L EcoTec with zero issues on startup, noting that the lubricant is “pretty sticky” and adheres the way it should. Unlike some black moly greases that can plug an oil filter on first fire, Red Line says this version moves through the system without blocking it.

The consistency is noticeably thinner than a heavy grease like Sta-Lube, which is a trade-off. It spreads and coats fast, but customers note it “stays put unless globbed.” Several owners mention it leaves a lasting slick film that feels superior to oil. If you prefer a brush-on liquid over a squeeze-and-smear paste, this is your pick.

One key difference versus the Lubriplate grease below: this is a synthetic fluid, not a calcium-soap grease, so it resists separation over longer storage periods between assembly and startup.

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Two bottles for the price of one single — a budget-tier ticket to full rebuild protection.

This is a 4-ounce two-pack from PRM (sold under the Permatex brand name) that comes out to 8 total ounces of sticky liquid lube. One buyer listed exactly where they used it: “crank bearings, cam bearings, rods, rings, oil pump, cam lobes, lifters, pushrods, rocker arms.” That is essentially every friction surface inside a long-block, so the coverage here is real. The manufacturer recommends it for camshafts, lifters, valves, guides, and rocker shaft assemblies, and the formulation is said to meet OEM performance specs for engine assembly lubricants.

The consistency is notably thick. Multiple reviews call it “very sticky stuff” that ensures a lasting coating during the break-in process. One builder who races noted that engine parts “look great after racing for many many laps,” which suggests the film does not shear off under high RPM. Compared to the ARP product above, you get a lot more volume for roughly the same cost — about 8 total ounces versus ARP’s 1.69 oz tube.

One thing to keep in mind: the bottles have a nozzle tip, but the lube is thick enough that you may need to squeeze with some muscle to get it flowing evenly across a cam lobe.

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The German paste that lives through 842°F without smoking off the lobe.

Liqui Moly LM 48 uses a unique solid-lubricant system — zinc sulfide, graphite, fluorides, and tungsten disulfide — that forms a dry-film layer under extreme pressure. That mix gives it a service temperature range of -31°F to plus 842°F, which is dramatically wider than most tube greases we see in this category. The Sta-Lube below has a flash point of 450°F; this paste is rated for roughly double that. That matters if you are running a boosted or high-compression engine where valve-train heat spikes hard during initial cam break-in.

Reviewers point out it works “amazing on valve-train parts and assemblies” and that it “does not cause any issues mixing with oil.” A single 50-gram tube goes a long way — buyers comment that one tube covers a full engine assembly. The paste consistency means you can apply a thin, precise layer directly to cam lobes and lifter faces without dripping anywhere else.

A couple of things to compare: the 50g tube holds about 1.76 oz by weight, so it is a small tube — much less volume than the 10-ounce Lubriplate or the 12-ounce Red Line. You are paying for extreme-temperature chemistry, not for bulk. Also, this is a paste, not a liquid, so it takes more finger-work to spread evenly.

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The white grease that truck-shop mechanics have trusted unchanged for four decades.

Lubriplate No. 105 is a calcium-based grease in a 10-fluid-ounce tube with a max operating temperature of 150°F. One reviewer who runs a semi-truck repair shop says they “always restock this brand.” Another buyer sums it up plainly: “I use this grease on the assembly of almost everything.” The key feature here is staying power — it resists wash-off and does not run off vertical surfaces, which is exactly what a cam lobe needs during the dry seconds between cranking and oil pressure build. The NLGI grade of 0 means it is a semi-fluid grease, softer than a chassis grease but thicker than a liquid assembly lube, so it clings without being impossible to spread.

Compare this with the Red Line liquid above — at 10 fluid ounces vs Red Line’s 12 fluid ounces, the Lubriplate gives you only slightly less volume, but the 150°F max temp is notably lower than the 450°F flash point on the Sta-Lube. That means Lubriplate is better suited to standard street builds, not extreme-duty or forced-induction engines. For a daily-driver cam install or general engine rebuild, buyers across decades say it simply has not let them down.

One reviewer who has been using it for 40 years says the product “has not changed in 40 years” — the exact same formula keeps working. That kind of track record is rare in this category.

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The thick cam grease one builder used for a timing-belt job that turned into two engine builds.

Sta-Lube SL3331 is a lithium-based grease packed with moly-graphite solids, and it comes in a 10 Wt Oz tube. One buyer specifically describes using it on “new camshaft lobes, journals, and bearings during timing belt/water pump install” and notes it stays in place “for days before startup” before dissolving into motor oil. Another reviewer built two engines with the same tube — that kind of coverage from a single tube is impressive. The flash point is listed at 450°F, which is 450°F versus the Lubriplate No. 105’s 150°F max, so this grease is ready for high-heat break-in cycles.

At 0.69 pounds, the Sta-Lube tube is 0.69 pounds versus the ARP 100-9909’s 0.14 pounds, giving you more material for a modest price step up. The extreme-pressure additive package — lithium soap plus moly-graphite — is designed to prevent friction, galling, and wear during assembly, start-up, and break-in. One owner who used it on camshaft and rocker arms during a cylinder head rebuild says after thousands of miles there were “no issues.”

One thing to note: the moly-graphite solids are black and can stain hands and clothes. It also takes a strong squeeze from the tube to get the thick grease flowing onto a cam lobe.

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ARP’s tiny squeeze tube that delivers precision torque accuracy and cam protection in one.

The ARP 100-9909 is a 1.69-ounce fluid squeeze tube that was originally designed as a torque compound for lubricating threads on head studs and fasteners to get accurate torque readings. But because of its extreme-pressure anti-gall properties, engine builders also use it on cam lobes and lifter faces during assembly — the same way they need accurate thread friction, they also need that friction control on sliding cam surfaces. At 0.14 pounds, it weighs a fraction of the 0.69-pound Sta-Lube tube, and the volume difference is stark: 1.69 oz vs 10 Wt oz. You are paying for the specialized extreme-pressure chemistry and the trusted ARP name, not for quantity.

One reviewer explicitly says: “Remember when using torquing compound, make sure all the threads are clean.” That same buyer advises putting a “light amount on the faces of washers and all contacts spots” to prevent galling. Another review calls it “great compound for getting accurate torque.” So this lubricant has a dual identity — it is both an anti-seize thread lubricant and an assembly paste. That works well if you are already using ARP fasteners on your build and you want one compound for bolts and cam lobes.

The catch, as buyers report, is that the tube is small. You will use most of it on head studs and main-cap bolts, leaving little spare for coating every cam lobe and lifter. If you need generous cam coverage, you will probably pair this with a bigger tube like the PRM 2-pack or Sta-Lube.

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Comp Cams’ dedicated lube that keeps your cam warranty valid and the lobes alive.

COMP Cams is arguably the best-known aftermarket camshaft brand in the USA, and they sell their own installation lube — the 153, an 8-ounce bottle. The label says it is “for camshaft break-in,” and one reviewer specifically notes that it is “needed to maintain your Comp warranty.” That alone is a compelling reason to buy: if you install a Comp cam without their lube and have a failure, you may void the warranty. The liquid volume works out to 0.24 liters, placing it between the small ARP tube and the larger Lubriplate tube in terms of capacity.

Owners mention that it stays on the cam shaft — “working great it stays on the cam shaft” — even after the engine sits for a while following a rebuild. One owner of a Coyote Aluminator engine (a Ford crate motor) used it and had no complaints. Another more experienced builder notes that the protection “lasts for a long time following application,” which is valuable for engines that sit on a stand for weeks or months before the first start. The material is listed as “lubricating oil” so it pours easily from the bottle, unlike paste lubes.

One reviewer does warn that it is “a little more expensive than some other equivalent products.” You are paying a premium for the Comp Cams brand trust and the warranty assurance. But for a racer or builder installing a Comp stick specifically, it is the easiest decision in this list.