First off I am sure that WIX makes a great filter. So sure I put them on both my Cruisers. With that being said a faulty 51515 roached my 1FZ. A couple weeks ago before I left to go to work, I started the 80 before I went to work to let it warm up a little since it was around 20 degrees outside. Started and sounded fine as I walked back in the house, sounded fine as I got back in. I always check my oil pressure gauge and temp gauge before I drive off and both were normal before I drove off. Less than a mile later I hear something that sounds like a threshing machine flying to pieces. I glance at my gauges and I have zero oil pressure. By the time I slow down enough and get it pulled off the road it's knocking like crazy. I immediately knew the damage was catastrophic to the motor. After talking to a friend @stevezero he told me he had the exact thing happen to his LX450 a few years ago and it was a oil filter problem so I decided to start there. Pulled the filter and cut it to inspect, it was really dirty to only have 4000 miles on the synthetic oil and the fins were very distorted. I throw on another WIX 51515 and start it and immediately my oil pressure goes exactly back to normal but the damage was already done. Still knocking like crazy. I decided to contact WIX about the possibility of having a faulty filter. I was told that they would have a district manager contact me but since I was using the wrong filter for the 80 and I had already cut it they would not warranty any of the damage. I get the part about me cutting the filter, I totally understand but they say that the WIX 51515 was listed for use on Landcruiser's 1971-1996. I have a 97 and it's supposed to have WIX 51348. I couldn't believe my ears, but nevertheless I talked to the district manager and he explained to me that they would not be able to do anything about it but he would like to look at the filter. Luckily I had kept it and all its contents because when he looked at it he discovered the bypass valve had not been installed like it should have been in my filter. He said he believed I got an oil pressure surge from the valve sticking open in my oil pan and since the filter had no bypass valve to help keep the drain back valve from being loose it dislodged and blocked off the filter totally.
He also said if the filter had the bypass valve none of this would have happened because the drainback valve would have not been able to come off. He also said that if the filter had been assembled correctly my motor would be fine but since I had already cut it and it was the wrong filter they would not warranty anything. So I'm left with a roached motor.
He also said if the filter had the bypass valve none of this would have happened because the drainback valve would have not been able to come off. He also said that if the filter had been assembled correctly my motor would be fine but since I had already cut it and it was the wrong filter they would not warranty anything. So I'm left with a roached motor.
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