I would say that in the long run, paying to have a place do it for you with an OE seal is the best bet. I paid $344 for mine and it hasn't leaked since.

I seen other members paying around $220 IIRC during sales.

__________________
Chad
2013 Jeep Unlimited Rubicon
OBK#44
"Pleasure in the job puts perfection in the work." - Aristotle (384-322 B.C.)

SOLD
1985 300TD - Red Dragon
1986 300SDL - Coda
1991 - 300TE
1995 - E320
1985 300CD - Gladys
2006 Nissan Pathfinder LE
1998 Acura 3.0 CL