What causes undertray brackets to break?

After 3 weeks, I have my new to me Testarossa back from the shop. The car runs smoothly, and started this morning quite well, so I'm a happy camper.

In going over the bills for the Major, water pump rebuild, and so on, I noticed a few things that I'd like comment upon.

1. At 17,800 miles, the mechanic didn't think that the fuel filters or air filters needed replacing, although he did replace the fuel lines, and fuel tank vent lines, and some heater pipes, freon in A/C, tensioner bearings, cam belts, etc. Mistake? Or ok?

2 The mechanic also said that three out of four undertray brackets were broken, and they had to weld those back in place under the car. What would cause that to happen? The last two local owners were mature, non racing type owners. Neither the mechanic or the service manager thought there was much out of the ordinary here.

Otherwise, the engine is apparently a strong performer, very solid, and the mechanic could find no evidence of any ham fisted mechanical work, which he probably didn't know was because the Los Gatos Ferrari guys did the work on the car when they were still Los Gatos Ferrari. Maybe Rifledriver worked on this one sometime in the past, who knows?

Anyway the car is home, started, the ECU malfunction seems corrected, and now I'm too sick to actually get out and drive today. Hoping the sunshine holds up a few more days, although rain is expected!!

 

Original registration on 2/28/88 to Ron and Janice Dorst (he is/was a Doctor locally in California. I don't want to put any more info about him in the internet without his permission.

On 2-21-99 John Thorpe purchased the vehicle.

On 1-26-06 I purchased the vehicle.

All purchases were done through Ferrari of Los Gatos and its successor.

Ben Shamlou shows as the service advisor in 04 (now in Las Vegas at Lamborghini, I am told) Angelo Orciuoli did some work in May of 02.

William ??? signed off on 4/4/89 on the free service coupon, but the balance of records are on receipts, not in the book.

Tires were sourced out in 2002 (Pirelli 800s) and battery in 2004. Not sure who else at LG Ferrari might have worked on it. It would be fun if one of them was you.

 

Too bad it's the wrong person. What a romantic provenance for this Testarossa that WOULD have made. Thanks, Brian. Sounds like you didn't work on it....

When do you think the fuel filters need to be changed assuming I'm running 91 octane California unleaded gasoline?