Is the timing cover oil leak on my Lexus RX 350 worth fixing?

Short answer: Many RX 350s with the 3.5L V6 (engine code 2GR-FE) develop a slow oil seep where the timing cover meets the engine. It's usually a weep rather than a gush, because the oil there isn't under much pressure. A proper reseal is expensive (owners were quoted roughly $3,200 to $7,000) because the engine has to come partly apart. Many owners just watch the oil level, keep the area clean, or have a shop seal the outside, and only do the full repair if the oil loss becomes significant.

Symptom: Oil wetness at the passenger-side front of the engine, drips on the garage floor, a burning oil smell if it reaches the exhaust, or a shop noting 'timing cover leak' on an inspection.

What to check first

1. Check the oil level regularly and note how much you add between changes. That tells you how urgent it is.
2. Ask the shop to confirm where the oil comes from. Valve cover gaskets and other seals can leak in the same area.
3. Check whether you're still under the 6-year/70,000-mile powertrain warranty. One owner said his dealer fixed it under that warranty.
4. If you're out of warranty, ask Lexus for goodwill. One owner said Lexus corporate offered $1,500 toward a $6,000 dealer quote.

Likely causes

1. Timing cover sealant seep (2GR-FE V6). The sealant between the timing cover and the engine weeps oil over time.
2. Other nearby leaks. Valve cover gaskets and other seals can leak in the same area and look similar.

What it usually costs

On ClubLexus, a 2017 RX owner at about 50,000 miles said Lexus quoted $6,000 to reseal it, Lexus corporate offered $1,500 toward that, and a local shop quoted $3,200. A 2013 RX owner at 155,000 miles was quoted about $5,000 by an independent shop and $7,000 by a dealer, with a possible $2,000 more if exhaust parts needed replacing. Some owners pay much less by having a mechanic clean the area and seal it from the outside.

Is it safe to keep driving?

Usually yes, as long as you keep the oil level up and oil isn't dripping onto the exhaust. A slow seep isn't an emergency. If you're adding oil often, see smoke, or smell burning oil, get it looked at. Verify with a mechanic.

DIY or shop?

Shop for a real reseal. It's a major job. DIY for monitoring the oil level and keeping the area clean.

Recalls, bulletins and complaints in plain words

• No recall covers the RX 350 timing cover leak in NHTSA's recall data.
• NHTSA complaints: 22 keyword-matched complaints for Lexus RX 350 2010–2022 (of 725 unique complaints queried, NHTSA complaints API by model year, queried 2026-10-19; keywords: timing cover, oil leak, leaking oil, oil seep) (NHTSA returned no complaint data for 3 model-year queries).

What owners report

• In 2017 RX 350 Timing Cover Leak on ClubLexus, an owner at about 50,000 miles was quoted $6,000 by Lexus, offered $1,500 by Lexus corporate, and quoted $3,200 by a local shop. A 2016 owner said his mechanic cleans the area and applies high-temperature silicone about every 15,000 miles, since the oil there isn't under pressure. Another owner said his dealer fixed it under the 6-year/70,000-mile powertrain warranty but had to redo it within 12 months, and it still seeps.
• In 2013 RX 350 Timing cover leak, an owner at 155,000 miles was quoted about $5,000 by an independent shop and $7,000 by the dealer. A 2015 owner said a few coats of spray sealant over the cleaned area kept it dry for a year, and another member said almost every 2GR-FE develops this leak and most owners don't fix it unless they're adding a lot of oil.

My take

My advice as a former pre-purchase inspector: I see this seep on lots of RXs and Toyotas with this V6. On its own it doesn't scare me off. I check the oil level and look at whether it's reaching the exhaust. If the car is under warranty, I tell the buyer to get it documented before the warranty runs out.

Vehicle focus: 2010–2022 Lexus RX 350 with the 3.5L V6 (2GR-FE); similar V6 Toyotas and Lexus models see the same seep.

Safety / mechanic note

Oil dripping on the exhaust can smoke or catch fire. Verify with a mechanic.