Image 1 — Rear Expansion Tank/REx Coolant Reservoir Oil Contamination
Image 2 — Rear Expansion Tank/REx Coolant Reservoir Oil Contamination
Image 3 — Rear Expansion Tank/REx Coolant Reservoir Oil Contamination
Image 4 — Rear Expansion Tank/REx Coolant Reservoir Oil Contamination
Image 5 — Rear Expansion Tank/REx Coolant Reservoir Oil Contamination
Image 6 — Rear Expansion Tank/REx Coolant Reservoir Oil Contamination
▲ 2 r/BMWi3

Rear Expansion Tank/REx Coolant Reservoir Oil Contamination

Anyone dealt with this before? Took a 275 mile trip on two legs driving hwy speeds 45-75 mph. ECO Pro and Pro+. No CEL, codes, warning etc. I was very happy how the car did, I didn’t charge much and used the REx. Parked the car after the trip and moved the car yesterday and found the leak on the ground. Looked under the car and under the engine compartment. Found the leak and can see contamination in the coolant. Engine oil looks clear. I did not know about the leak, but the REx was running okay with no abnormal sounds. Held charge well.

My base search online seems to be it’s possibly the heat exchanger (oil coolant, 17-11-7-623-685) or a gasket head (seal). Won’t know until it’s diagnosed properly.

Question is, would this be considered a CARB repair? My understanding is that the coolants in the REx also cool the battery. I am in a CARB state, CA, and the car is registered in it. 2019 i3 REx w/ 62300 miles.

u/redhouse_356 — 1 day ago

Short & Long term perspectives on collection

Looking for some opinions on items to move. I'm looking to consolidate my collection, pick up a grail BB, and cash out a bit. I may trim about $20k or more. You: recommended to sell & Them: Keeping.

I stopped by the shop I frequent for trades/buying singles or packs and asked the owner for his thoughts. He said he'd keep the majority of the collection and consider moving sealed items -too many people sitting on sealed, currently thinks slabs have more upside. A vendor was there today and I asked him as well. He was focused more short term and suggested moving a lot sealed and slabs that have run up recently -same thoughts on sealed and believes certain cards are too hyped (Chinese). Both of them are in the business of moving items quickly and avoiding stagnant inventory.

TLDR: let me know what you would sell from my collection and what you would hold. Open to suggestions on cards, slabs, and sealed to pickup.

u/redhouse_356 — 2 months ago

Guard came in!

First time using any kind of guard. Kinda looking at the rest of my slabs right now. Wondering.

u/redhouse_356 — 2 months ago

1st Edition Trainer: Pass or Vault?

What do we think? Is the card overvalued or should I keep it? If I sell, probably going to pick up my last AH single.

u/redhouse_356 — 3 months ago

Surprised indeed!

Very happy with this submission. Sent in a Van Gogh, but it was pretty tilted, got a 9. Maybe on the next go.

u/redhouse_356 — 3 months ago

It’s a Gengar kinda day!

Got my grades back today. Will need to find another Pikachu 172/151 tho. Trying crossover a sequential set. Very happy with the 151 on the Gengar. Pretty cool!

u/redhouse_356 — 3 months ago