Never replaced them myself and I've replaced the filter on a few occasions. Just ensure you use some loctite and torque correctly and you shouldn't have any leaks.

 

You're saying that you will be replacing the oil pan gasket but follow by transmission has 22 bolts. So are you asking about the oil pan or trans pan?? Either way not necessary to replace the bolts.

 

Thanks, this made me realize my mistake. I was reading two different guides and one was for the transmission. I got all mixed up there. Looks like I'll be reusing the existing bolts on the oil pan.

 

Use a socket wrench, not an impact gun on oil/trans pan bolts. They seem to snap off - particularly in rusty areas - when using a gun. You don't want to snap off a pan bolt

 

there are normal bolts, and one time use bolts. the single use bolts stretch when you tighten them, and are never the same afterward. those special bolts are typically used to the high torque engine join points. the bolts you mention are all normal bolts.

 

^^^ agree

Thanks, this made me realize my mistake. I was reading two different guides and one was for the transmission. I got all mixed up there. Looks like I'll be reusing the existing bolts on the oil pan.

What I like to do is order a small number of replacements, say something like 3, so that during installation if I lose one or if I find one that is particularly rusty, I would replace them. Other than that, it's ok to reuse as they are low torque applications.

 

It's not necessary to replace, but it doesn't hurt. The factory oil pan bolts are regular 8.8 grade steel with a zinc coating. By now the zinc coating is probably gone so to avoid future steel and aluminum thread corrosion it wouldn't be a bad idea to replace. They're cheap from Belmetric or McMaster Carr.

 

I have found oil pan bolts to be loose on various cars over the years. I would not hesitate to put a half turn on an oil pan bolt. If you go to turn a bolt and it doesn't want to be turned, move along. But there are lots of cases where a few bolts in a row will easily take some wrench love, and this will almost always stop an oil pan gasket leak.