The 5.7 3UR-FE is famous for leaking from its sealant joints — cam towers, timing cover, and a weeping water pump, usually all around the same time. We do the complete reseal bundle in your driveway, so it's fixed once instead of three times.
Toyota built the 3UR-FE 5.7 V8 without conventional gaskets in several key places. The cam towers — the housings that hold the camshafts on top of each cylinder head — and the front timing cover are sealed with factory-applied RTV sealant (Toyota calls it FIPG). Sealant isn't a gasket: after fifteen-plus years of heat cycles, especially with Ontario's deep-freeze winters and hot summers, the RTV hardens, shrinks, and lets go. Oil starts weeping from the cam-tower-to-head joint, typically at the back of the engine first, where it runs down onto the bellhousing and exhaust.
The timing cover seam usually starts seeping in the same era, and the original water pump tends to start leaking from its weep hole around the 100,000 km mark. That's why this is a bundle, not three separate jobs: fixing the cam towers properly means pulling the camshafts and resealing the towers, and most of that teardown is shared with the timing cover and the water pump. Doing them one at a time means paying for the same disassembly twice or three times.
Done right — old sealant fully cleaned off, surfaces prepped, genuine Toyota FIPG applied in the correct bead pattern, everything torqued to spec — the reseal lasts as long as the factory job did, often longer. Done lazy (a smear of parts-store RTV over a dirty surface), it leaks again within a year. The prep is the job.
If your Toyota is doing any of these, this is the likely cause:
These leaks only travel in one direction: wider. Oil dripping onto hot exhaust makes the smell you're noticing now, and chronic low oil is the real risk — a 5.7 run low on oil under load is a far bigger bill than any reseal. Oil migrating down the back of the engine also soaks the upper oil pan joint, which is how these trucks end up misdiagnosed with rear main seal leaks. And if the water pump is seeping, it doesn't heal; it eventually lets go and takes your coolant with it.
Yes. Nothing about this repair needs a hoist — it's all top-end and front-of-engine work done from above and from a wheel-well. It needs time, clean prep, and the right sealant, not a shop bay. We've set up for full-day engine resealing jobs at customers' homes across the GTA; you just supply the parking spot.
Book time for cam towers alone runs well into double-digit hours, and dealers often quote the cam towers, timing cover and water pump as three separate repair orders — so you pay for overlapping teardown more than once. Their hourly rate also carries the building, the service writers and the shuttle fleet. We quote it differently: one flat price for the complete bundle, agreed before any work starts. No hourly meter, no surprise add-ons mid-job.
You can, but it's usually false economy on this engine. The teardown overlaps heavily, so doing them separately means paying for much of the same labour twice. If your cam towers are dry and only the pump is weeping, we'll tell you that honestly — we inspect first and only bundle what's actually leaking.
The factory seal lasted 15+ years and a couple hundred thousand kilometres — that's what a proper FIPG job gets you. Repeat failures happen when the old sealant isn't fully removed or the wrong product is used. We clean every surface back to bare metal, use genuine Toyota FIPG, and torque to spec, which is exactly the factory process.
Send it over for a free second opinion. I'll tell you straight what the job actually involves — and if their quote is fair, I'll tell you that too.
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