Originally Posted By: Dave1027
Originally Posted By: jbn3500
Had my first ever UOA back on my truck. I have had this vehicle since new. Was concerned if I would find traces of antifreeze in the oil, since these 4th gen. 4runners are notorious for HG leaks. Mine has never had any signs of a leak yet, knock on wood. Thanks.
Notorious? I have the same engine in my '07 Tacoma. This is the first I have ever heard about HG leaks on these engines. Could that have been an '04 thing that was fixed on later models?
Dave, it's mostly in the 4th gen 4runners, but the earlier years seem to have the issues. ALOT of HG problems are caused from owners overheating their engines. Luckily, I have never overheated my vehicle.