cowboyjack
Veteran Member
1998 A3 Jetta TDI. Just bought it used.
Tried to change oil today. Drained. No problem. Old oil filter, apparently from a Firestone oil change... hard to take off, but okay.
Put drain plug back in, no problem. Put on brand new Mann W 840/2 oil filter. No problem. 4.5 liters of Rotella T 5w/40w synthetic. No problem.
Started the thing up... BIG problem. Oil GUSHING out of top of filter, apparently between filter and oil cooler, on left side looking in from front of car.
Maybe a bad filter? Tried another Mann filter. Same gushing mess.
Oil filter surface that mates with filter looks clean and smooth enough.
Tried the OLD Firestone filter that was on the car when I got it... NO leak whatsoever.
So off to Firestone. Got the same filter as the old one. Put it on. Same gushing oil leak.
Old Firestone filter back on, no leak.
9 hours. 100 degree heat. 4 gallons of oil, more or less. And the oil still isn't changed. Priceless?
I've been changing oil in cars & trucks for 35 years and never seen nothin' like this. Anyone else encountered this?
Can the previous oil change shop have screwed on the wrong oil filter hard enough to DENT the oil cooler so that it now leaks under normal filter installation tightening?
Should I pull the oil cooler next and replace the sender unit, the O ring above, the stud and the locknut AND the cooler?
Suggestions? Ideas?
thanks in advance
Tried to change oil today. Drained. No problem. Old oil filter, apparently from a Firestone oil change... hard to take off, but okay.
Put drain plug back in, no problem. Put on brand new Mann W 840/2 oil filter. No problem. 4.5 liters of Rotella T 5w/40w synthetic. No problem.
Started the thing up... BIG problem. Oil GUSHING out of top of filter, apparently between filter and oil cooler, on left side looking in from front of car.
Maybe a bad filter? Tried another Mann filter. Same gushing mess.
Oil filter surface that mates with filter looks clean and smooth enough.
Tried the OLD Firestone filter that was on the car when I got it... NO leak whatsoever.
So off to Firestone. Got the same filter as the old one. Put it on. Same gushing oil leak.
Old Firestone filter back on, no leak.
9 hours. 100 degree heat. 4 gallons of oil, more or less. And the oil still isn't changed. Priceless?
I've been changing oil in cars & trucks for 35 years and never seen nothin' like this. Anyone else encountered this?
Can the previous oil change shop have screwed on the wrong oil filter hard enough to DENT the oil cooler so that it now leaks under normal filter installation tightening?
Should I pull the oil cooler next and replace the sender unit, the O ring above, the stud and the locknut AND the cooler?
Suggestions? Ideas?
thanks in advance