Cleaning the Engine Bay?

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Wilson

FRF Addict
Joined
Jan 27, 2012
Posts
26,211
Reaction score
10,314
Location
South Dakota
Armor all spray foam works great cleaning mud in the engine bay. Give it a try

I used to think armor all was the answer until it turned my Honda wheeler pink.

---------- Post added at 10:12 PM ---------- Previous post was at 10:06 PM ----------

P.S. sorry Adams simple green on engine bay is cheaper not sure if it's safer I'm sure it will strip selent also. PPS I'm not an expert.
 

armoredveh

Active Member
Joined
Feb 12, 2013
Posts
92
Reaction score
26
Location
NoVA/WDC
Simple Green is an extremely effective detergent...but should not be used on aluminum parts, which, I'm told, will ruin the finish.
 

AdamsPolishes

Supporting Vendor
Supporting Vendor
Joined
Mar 15, 2013
Posts
3,210
Reaction score
2,342
P.S. sorry Adams simple green on engine bay is cheaper not sure if it's safer I'm sure it will strip selent also. PPS I'm not an expert.

Simple Green is a moderate cleaner at standard dilutions but not a heavy degreaser even at a 1:1 dilution. Since the pH is only 8.5-9.5 in the concentrate form, and then less than that using standard dilutions of 10:1 to 30:1, it will clean some oil and grease but may not get all of it.

All Purpose Cleaner is a professional strength degreaser, with a pH of about 12.

If you use Simple Green on your engine but still have areas that did not come clean, use the stronger All Purpose Cleaner.

Any moderate-to-high pH cleaner can damage raw aluminum. This is typically only a concern with raw, polished aluminum. Cast aluminum on a engine block is not a concern, but polished aluminum valve covers would be a concern, as would raw, polished aluminum wheels. For any surface, aluminum or painted, do not let the cleaner sit more than 5 minutes, do not allow to dry, and rinse thoroughly.

Factory aluminum wheels are clear-coated, so there is not issue using All Purpose Cleaner on them.

Also, the All Purpose Cleaner can be diluted with distilled water to make a gentler cleaner, and also to reduce the cost-per-ounce for use with lighter levels of cleaning, where you don't need the full-strength cleaning power.

Some dilutions used with All Purpose Cleaner:
8:1 - delicate aluminum wheels or trim
4:1 - bug or tar pre-treatment, door sills, kick panels
1:1 - coated/painted wheels

For each of these dilutions, the bigger number is the ounces of distilled water, and the smaller number is the ounces of All Purpose Cleaner. These dilution ratios do not need to be exact. For example, the fist dilution is often just 2 ounces of APC in a standard 16ox spray bottle, then fill teh rest of the bottle with distilled water. That ratio is technically 7:1 (14oz of water and 2oz of APC), but it is close enough. Always mix product dilutions with distilled water, as regular tap or well water can have minerals or other stuff in it that negatively affects the product.

Lastly, never allow any cleaner to get on hot paint or use in the sun, and never allow to dry on any paint, even the painted parts in the engine bay. This is important for engine cleaning, that you don't just spray the cleaner all over the engine and also get it all over the outside of the truck (fenders, bumper, hood, etc). If you get overspray outside the engine bay, rinse immediately, and then remember to re-apply sealant of wax to the paint, since the cleaner will strip these off.

Since the Car Wash Shampoo is pH nuetral, it can be allowed to dry on the paint with no issue.

-Dan

---------- Post added at 10:59 AM ---------- Previous post was at 10:58 AM ----------

I did not know this! @AdamsPolishes how about all purpose

^ see above.
 

2014RubyRed

FRF Addict
Joined
Jan 11, 2015
Posts
8,890
Reaction score
7,043
Location
Galesburg, IL
Simple Green is a moderate cleaner at standard dilutions but not a heavy degreaser even at a 1:1 dilution. Since the pH is only 8.5-9.5 in the concentrate form, and then less than that using standard dilutions of 10:1 to 30:1, it will clean some oil and grease but may not get all of it.

All Purpose Cleaner is a professional strength degreaser, with a pH of about 12.

If you use Simple Green on your engine but still have areas that did not come clean, use the stronger All Purpose Cleaner.

Any moderate-to-high pH cleaner can damage raw aluminum. This is typically only a concern with raw, polished aluminum. Cast aluminum on a engine block is not a concern, but polished aluminum valve covers would be a concern, as would raw, polished aluminum wheels. For any surface, aluminum or painted, do not let the cleaner sit more than 5 minutes, do not allow to dry, and rinse thoroughly.

Factory aluminum wheels are clear-coated, so there is not issue using All Purpose Cleaner on them.

Also, the All Purpose Cleaner can be diluted with distilled water to make a gentler cleaner, and also to reduce the cost-per-ounce for use with lighter levels of cleaning, where you don't need the full-strength cleaning power.

Some dilutions used with All Purpose Cleaner:
8:1 - delicate aluminum wheels or trim
4:1 - bug or tar pre-treatment, door sills, kick panels
1:1 - coated/painted wheels

For each of these dilutions, the bigger number is the ounces of distilled water, and the smaller number is the ounces of All Purpose Cleaner. These dilution ratios do not need to be exact. For example, the fist dilution is often just 2 ounces of APC in a standard 16ox spray bottle, then fill teh rest of the bottle with distilled water. That ratio is technically 7:1 (14oz of water and 2oz of APC), but it is close enough. Always mix product dilutions with distilled water, as regular tap or well water can have minerals or other stuff in it that negatively affects the product.

Lastly, never allow any cleaner to get on hot paint or use in the sun, and never allow to dry on any paint, even the painted parts in the engine bay. This is important for engine cleaning, that you don't just spray the cleaner all over the engine and also get it all over the outside of the truck (fenders, bumper, hood, etc). If you get overspray outside the engine bay, rinse immediately, and then remember to re-apply sealant of wax to the paint, since the cleaner will strip these off.

Since the Car Wash Shampoo is pH nuetral, it can be allowed to dry on the paint with no issue.

-Dan

---------- Post added at 10:59 AM ---------- Previous post was at 10:58 AM ----------



^ see above.


I'm not totally clear as to why we have to use distilled water? Since we aren't letting it dry, what is the problem with using tap water?
 

AdamsPolishes

Supporting Vendor
Supporting Vendor
Joined
Mar 15, 2013
Posts
3,210
Reaction score
2,342
I'm not totally clear as to why we have to use distilled water? Since we aren't letting it dry, what is the problem with using tap water?

The distilled water for dilutions is so that the product is not affected by the stuff in the tap water.

This is more of a long-term issue, than an issue for immediate use. If you made an APC dilution with tap water, then used it all up during that day, there would be no issue with the APC dilution. But, if you did not use it all, and put it on the shelf for a few weeks, the next time you might have issues with it.

This is more of a general rule for product dilutions, as some products are more sensitive to the dilution water than others are. With APC, you may never have an issue with using tap water. For diluting products like Rinseless Wash, Leather & Interior Cleaner, Deep Wheel Cleaner and Super VRT, you will likely run into issues making dilutions with tap water.

-Dan
 

RandySTI

Member
Joined
Jan 26, 2019
Posts
14
Reaction score
5
Location
Clearwater, florida
This is an old post, but any new updates? Sorry about digging up and old post. I have a 19 and the engine bay is awful, I just sprayed with engine cleaner rinse and repeated and still looks awful, it’s bone stock with no intake. Any electronics I should worry about ? Being a raptor and knowing what Owners might do with them, you would think everything is weather tight. Any new suggestions ?
 
Top