Subaru WRX Forum banner

Notice : Potential of RTV residue in Oil Pickup Tube Filter

9.4K views 19 replies 7 participants last post by  dexstrat  
#1 · (Edited)
I came across an interesting article concerning a present issue in Toyota GR86 vehicles, which share the same 2.4L Boxer engine found in Subaru BRZ and WRX vehicles.

Issue: excess RTV material from the oil pan cover clogging the oil sump filter in the pickup tube, potentially causing oil starvation for the engine.

The article is described in depth here:FA24 Engine RTV Issue

A video from RallySport Direct shows a walk thru of how to manually correct the problem by removing the oil pan to unclog the pickup tube, and reapplying RTV carefully to the oil pan.
Video:

One non-invasive check is using a probe camera to visually inspect the filter in the pickup tube. A quality camera would allow for this inspection. Toyota has provided a response to this issue, however, their response seems to lean on operator error, such as redlining the vehicle, thus agitating the RTV to separate itself from the pan, and causing it to get sucked into the pickup tube.

Thoughts???
 
#2 ·
Yes this was a very public debacle. Some guy drifted his gr86, blew engine, toyota dealer used drifting vids to deny warranty, story in news, car mags, forums, etc. then toyota did a u-turn.

Later it turned out a lot of brz owners had been facing this on NA fa20. And the fa24 issue is worse because the factory is slinging rtv with a trowel from the looks of it.

Redline and hard driving are bullshit reasons. The redline is quite literally the safe limit for revs and the gr86 is sideways at opposite lock in every ad.
 
#4 ·
There is a YouTuber (MrSubaru) who mentioned in a video that dealerships would be checking vehicles that may be affected by this issue. If that’s the case, then Subaru knows which vehicles are affected.

I would have expected Subaru to recalibrate those machines to apply a lesser amount of sealant on the parts, but that’s just my opinion. It’s in the company’s interest to fix the root of problem soonest then to pay millions of dollars over time with a massive recall and negative image correction.
 
#8 ·
I've been doing some reading and it appears everyone is in one of two camps....1) OMG! Your engine is going to explode or 2) The oil strainer is oversized and designed to catch debris like RTV...don't worry about it.

I fall in the middle. I'm not "worried" about it, but I would like to see if I have the issue and if there is an effective way correct or partially correct the issue without dropping the pan and sure enough voiding the warranty.

First thing I did was order a borescope. I'm going to take a peek inside and see what I can see. If I don't see any RTV...whew...I'm done. If I do, I'll keep an eye on it. A few small pieces won't concern me. Big chunks will. I will take pictures using the borescope and keep them for documentation should I have any issues. If it's bad enough, I may see if the dealer will drop the pan for me and clean it out.

I can't find when the first issue was reported and I haven't found anything stating Subaru has corrected the overuse or RTV. So my hopes that later 2022 models may not have the issue or that Subaru will own the problem and offer some sort of extended warranty at no cost are pretty dim.

One idea I have is to see if I can rig up an electronics vacuum that I might be able to wiggle in and suck some of it out. Just have to see what the borescope shows and how difficult it is to access the pickup.
 
#10 ·
Based on the process I've seen to drop the oil pan, it's pretty intensive and a multiple day job. I'm a fairly competent shade tree mechanic, but breaking studs and having to weld bolt head on the get them loose and having to re-tap them and such appears to be well outside of my skill set. Lots of opportunity to screw up and good ammunition for a dealer to void your warranty...or at least make an argument for it.

If I can find a local trustworthy mechanic I might see what they'd charge to do the work. I would imagine the dealer would charge at least $1000 to do it. I read somewhere that a guy paid the dealer $750 to drop the pan and they told him if there was no RTV then he would have to pay but if they found RTV then they would cover it under warranty. So if I have the issue and can show there is RTV in the pickup, perhaps I can convince them "fix it now for a little, or fix it later for a lot".
 
#19 ·
I figure that I’ll have a thorough check of the oil pickup tube between 30-50k miles. At that mileage, any RTV that was potentially getting loosened over time will finally have separated and made its way to the pickup tube filter.

Doing this check prematurely will not be that purposeful in my opinion because some of these RTV clumps break-apart from the seal a year or a few years later. Secondly, let Subaru work thorough the issue first so that you don’t waste any money during the first 2 years.
 
#20 ·
Does anyone know if there have been any reported engine failures due to rtv or other oiling issues with the VB generation so far? I know that for the gr86 there have been multiple reports of oiling issues, although the root cause isn't 100% known to be rtv so far. I'm in the market for a manual rwd or awd and the 86 and wrx seem like the best options but the issues with the fa24 are what are making me wary of them.