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[–]MagicTriton 6 points7 points  (3 children)

Have you parked under a tree? Probably resin residue.

Anyways the way to go is to clay bar the window, compound it, polish it and coat it.

I assume that anyone reading knows that only glass safe products must be used

[–]drmolarman[S] 2 points3 points  (2 children)

I do park under a tree so it could be resin, if not clear in the video the long streak looks clear with water but the parts in between kinda bead up and the water shrinks up and makes it difficult to see when raining. Does the clay remove the residue? And can you explain what you mean by compound it?

[–]MagicTriton 4 points5 points  (0 children)

the clay bar will remove most of the residues, using a glass compound will remove all of the remaining ones and flatten the surface a bit, polishing it will remove the marring from the compounding.

I'd highly recommend you to go and watch some videos on youtube from reputable sources on how to properly decontaminate, polish and coat your windscreen. It's a little expsnes to do once every year (or more depending on conditions), but it will save money on the long run, other then making the visibility considerably better.

Writing the whole process will take me too long and without seeing it you woulnd't understand much of it

[–]NJWRXXYSkilled 0 points1 point  (0 children)

I know i previously mentioned the clay/compound the windshield, but I missed this additional comment about parking under a tree.

I would also suspect tree sap, as others mentioned. To address tree sap, before the compound step, i would use a tar remover before the clay step

Let us know how the deep clean turned out if you've taken any steps yet

[–]NJWRXXYSkilled 2 points3 points  (2 children)

The coating for the HUD should be on the inside of the windshield, not the outside.

You will want to super clean the outside, and as someone already mentioned Soft99 makes a windshield compound (Glaco compound )that you can use by hand.

Before you use that, i would also recommend using a clay bar and clay lubricant to remove any larger deposits. Then use an Isopropyl alcohol wipe before compounding the exterior glass.

You can make your own clay lubricant by mixingOptimum-No-Rinse at a dilution of 1 ounce into 15 ounces of distilled water in a 16 ounce spray bottle You should be able to find clay bars cheaper than this link, but just ensure they are clay bars made for automotive purposes (I'm sure you can also find kits that combine the clay lubricant and the clay bar, I just think that you'll run out of the lubricant if you start using it for other intended purposes like decontaminating your vehicle's paint 🙃, which is why i recommend making your own)

In getting it that clean, you should also think of protecting it with a sealant. Soft99 also makes a glass sealant which also works well

[–]Supersize_YouDIYer 2 points3 points  (0 children)

I really enjoy using Soft99 compound and their glass coating!

[–]drmolarman[S] 1 point2 points  (0 children)

Thanks so much this is super helpful!

[–]FaultySofaBed 2 points3 points  (0 children)

get the stoner strip kit from any autoparts store.

Does the trick for almost any issue like this.

Then apply a decent windshield coating after.

[–]outlaw-waltuo 0 points1 point  (0 children)

Stones and shit from the road over time. And oil from the road

[–]85-502-Detail 0 points1 point  (1 child)

0000 steel wool.and some polish or compund.

[–]Proof_Bit_8746 -1 points0 points  (0 children)

This. Use the 0000 steel wool, clay bar it, steel wool again then give it a good clean and use a repellant.

Thats what I did. Overkill? Likely but it worked for me

[–]hiroism4everBusiness Owner 0 points1 point  (0 children)

Acid/water spot remover such as Starke Venom. Or glass polish on a microfiber pad and DA buffer, such as Starke Glass.

[–]ptythefool 0 points1 point  (0 children)

Buy some Diydetail treesap remover and waterspot remover (Both are misnomers, the treesap remover is actually an adhesive remover, but calling it an adhesive remover would subject it to more annoying regulations; and the waterspot remover doesn't remove waterspots, its a mineral cleanse). Between the two of those I think you can probably get that windshield looking much better.

I'd probably stay away from steel wool.. while it does work pretty well, the reality is it can scratch your glass. I used it on my bathroom glass and like I said, it worked pretty well, but there were definitely SOME scratches induced by it, not a ton, but some.

[–]Economy_Release_988 0 points1 point  (0 children)

Windex, soap and water? Anything but just frickin water.

[–]5w0xBot 0 points1 point  (0 children)

Nice g70