Studio Del Cesta - Consulenza Incidenti Stradali

19/03/2026

Interessante articolo per chi si occupa di consulenze in ambito giudiziario.

L'assenza di una norma omologa a quella valevole per il processo penale (art. 533 c.p.p.) pone il problema dell'individuazione dello standard probatorio civile.

24/12/2025

I nostri uffici saranno chiusi dal 24 dicembre 2025 al 06 gennaio 2026 compresi! Nell'attesa di rivederci il prossimo anno facciamo a tutti i nostri migliori di buone e serene festività! 🎄🎅

13/11/2025

Lo scorso 31 ottobre siamo stati onorati di portare il nostro contributo al 9° Convegno Nazionale della Accademia Italiana di Scienze Forensi, con il tema dell'Analisi dei Filmati di Videosorveglianza al fine di ottenere misurazioni antropometriche e non solo. Un particolare ringraziamento al Presidente e Direttore Scientifico dell'Accademia, Dott. Luciano Garofano per averci invitati a partecipare.

18/09/2025

Dopo il 𝗦𝗢𝗟𝗗𝗢𝗨𝗧 dei primi 70 posti messi a disposizione per il Convegno, sono stati resi sbloccati altri 20 posti. Per chi vuole partecipare, le iscrizioni sono disponibili fino a metà Novembre!

18/08/2025

BRAKE FLUID COLOR.
Back in the day, there was clear-to-light-amber DOT3 fluid, a glycol-based hygroscopic (absorbs water) fluid regulated by governmental bodies with regard to boiling temperature. Then DOT4 came along with improved chemistry and higher boiling point, but it was basically the same glycol-base and same color as DOT3. Then Silicone-based DOT5 synthetic fluid hit the market - this stuff doesn't absorb water (so water puddles in the brake system), and it doesn't eat the paint if you spill on the sheetmetal. AFAIK, DOT5 was PURPLE to distinguish it visually. These two don't mix (see the photo of DOT4 on top of DOT5), and should not be used interchangeably due to the possibility of interactions with the rubber seals in the system. After a number of years, the purple tint in DOT5 fades to just medium amber and it looks remarkably like plain old DOT3 or DOT4, or the newer higher-temp glycol-based DOT5.1 (which is visually indistinct from DOT3 or DOT4).

But that's not what I wanted to talk about today: Bicycles now come with disc brakes, and those makers often specify their own special mineral-oil-based fluids that are different colors, like GREEN. Yes, green brake fluid. No governmental bodies regulate "mineral oil." Companies like Shimano and Magura specify their own brake fluid. But mineral oil may not play nice with seals designed for DOT or Silicone, so it should not be used in systems not designed for it.

Some vintage Rolls-Royce and Bentley use mineral oil, and some European car manufacturers may now come with green mineral oil brake fluid. I haven't seen it yet, but that doesn't mean much. Can anyone confirm that? MB owner's manuals I've checked all say "brake fluid absorbs water" so they aren't using mineral oil in the ones I checked.

Around 2012, there was a short-lived option of buying BLUE DOT3 fluid, supposed to make it easy to see when a system was fully flushed, but that was deemed, uh, illegal. So they stopped selling that. It should not be around much now.

If a driver claims brake failure - check the fluid levels and color (among other things). In some circumstances, a more detailed examination of the fluid will be warranted.
Peace. -W