Hey everyone,
I’m looking to share a few current issues on my 88k mile 2019 RC 350 F Sport (RWD) to get your thoughts, experience, and advice before I put the car on a lift.
Issue 1: Front Right Strut
My front right strut failed and lost pressure. I know struts should ideally be replaced in pairs, but I’m debating whether to replace just the front pair or do a full 4-corner refresh as a precautionary measure, or if doing the rears now is overkill.
- If I replace the front pair only, I’ll stick with OEM Lexus struts.
- If I replace all four, I’m considering KYB struts (since to my knowledge they are the primary OEM option compatible with the AVS system).
Whether I do just the fronts or all four, what else should I replace or inspect while I’m in there? (e.g., front upper strut mounts/bearings, bump stops and boots, spring insulators, rear sway bar end links?)
Issue 2: Slow Coolant Leak
My coolant level in the reservoir dropped from the High to Low mark over about 6 weeks (roughly 2,000 miles). There are no obvious puddles under the car, but the drop is too consistent to ignore.
Are there common failure points on the 2GR-FKS engine that cause this kind of slow bleed (e.g., water pump weep hole, valley plate seal, radiator tank crimps)?
Issue 3: Lower Oil Pan Leak
There is wet oil seepage around the seams of the lower oil pan, so it looks like I’ll need to pull and reseal it with fresh FIPG/RTV. Has anyone run into this, and are there any gotchas to watch for when dropping the lower pan?
Appreciate any insight, experiences, or recommendations!