Item # 46001ZP BRAND: Glyptal

Glyptal Red Brush On 1 qt

Seals uneven surfaces in engine
castings to improve oil circulation
Seals uneven surfaces in engine
castings to improve oil circulation
Glyptal Red Brush On 1 qt is rated 4.6 out of 5 by 25.
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Out Of Stock. Due back January 29
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Seals uneven surfaces in engine
castings to improve oil circulation
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Glyptal Red Brush On 1 qt

Product Overview:


Multi-Purpose Glyptal® Red Enamel seals uneven surfaces in engine castings to improve oil circulation

  • Acid- and oil-resistant
  • Also resists moisture, heat dust, salt spray
  • Anti-corrosion protection

Glyptal 1201 seals the rough interior castings of engine blocks to help prevent engine damage. Sealing the tiny pores left in metal after bead blasting leaves the engine block interior smooth and clean, and that helps keep oil clean and flowing freely.

In the Box


Covers 24 Sq. Ft, Max Temp 250F, Enamel.

Guides & Accessories

Safety Information

Always use in a well-ventilated area, and always wear eye, skin and respiratory protection.

Application Tips

Glyptal is used to seal the internal surfaces of the engine block for fastest oil return to the sump. Make sure the surface is absolutely FREE OF GREASE OR OIL! Our Metal Wash concentrate (10120) or PRE Painting Prep (10041 Z) with the Engine Brush Kit (46035) does a great job of cleaning the engine block. Be careful to avoid getting paint on machined surfaces or in oil passage ways. Can be thinned with Xylol or Xylene.


Rated 5 out of 5 by from As Expected Product was intended for coating interior engine cases and oil bag on a Harley restoration I'm doing. Oil bag interior was rusted pretty bad so I cut the pinch weld off on top to gain access then media blasted interior and applied two coats of Glyptal. After coating I allowed it to cure in 100+ heat for a week then filled with water and welded top back on, water dissipates heat preventing paint burn and provides leak checks being a low pressure system. I knew the product would do the job without question. Being fairly new to the Eastwood company I was pleasantly surprised at how fast my order was filled and delivered in excellent condition. I will definitely be doing business with them again in the future.
Date published: 2018-08-09
Rated 5 out of 5 by from Awesome! This stuff worked exactly like I was told, I was able to coat the entire inside of my engine block, with plenty left over, it's self leveling, and makes the rough casting smooth as glass
Date published: 2017-12-29
Rated 5 out of 5 by from Only product of its kind and an excellent one I have used 1201 since the early 70's to coat the inside of racing engines. Like many others reviewing this product, it is easy to apply dries quickly and provides and excellent finish to seal cast surfaces and promotes oil drainage. It has insulating qualities as well. Impervious to oil and gas. Another user said Nitro doesn't affect it either. Clean up with acetone before curing is pretty easy as well as cleaning the paint brush. I am still using the same brush I used nearly 50 years ago on my current 383 chevy. Great product, it is a bargain at its price. A quart will treat scores of engine blocks.
Date published: 2016-06-04
Rated 5 out of 5 by from This an awesome product I am building a high performance Chevy smallblock for a restoration project and I've always wanted to paint the internals of a engine with Glyptal, Even though I've built a few engines over the years I never had access to this product (Thank You Eastwood) After using it I wish I had done so many years ago it goes on very easy dries quickly and cures into a great looking surface I wish I could show it off but I'll just have to be happy with photos
Date published: 2016-01-07
Rated 5 out of 5 by from Painted the inside of cast oil I have a cast Cobra oil pan and over the years the Aluminum has become porous. I glass beaded the pan first and then painted it with Glyptal in 2 coats. I have had it on the car for 3 weeks now and it appears to keep the oil from seeping into the pours of the pan. I would recommend it to anyone who rebuilds engines, transmissions, and rear ends to use this product. It is easy to work with and cleans up fast and easy and leaves a tuff finish.
Date published: 2015-03-14
Rated 5 out of 5 by from Great product This paint is excellent as an insulator and also for filling irregularities in metal. it also is excellent for inside of motors.
Date published: 2015-02-18
Rated 5 out of 5 by from Easy to Use I am refurbishing a 2005 Jinma Tractor. The Chinese engines are painted inside with a similar product. I wanted a fuel - oil resistant product to paint some external components as well as to renew the material on the inside of the castings. It is so much fun to paint it on that my wife took over for me. It goes along way, we transferred some to a 1 cup glass jar to paint out of so we could keep the can sealed and clean. Drys fast! Very happy with it so far. If you want a super even coat you should probably spray it. Cleans up with acetone. Jim B
Date published: 2015-02-01
Rated 5 out of 5 by from Great stuff I got first can came open and eastwood replaced it no questions ask had it so fast now that is Customer SERVICE.. THANK YOU.... I used it great stuff thank you
Date published: 2015-01-28
Rated 5 out of 5 by from Top qualitym easy to apply covers well Easy to apply with brush, covers well. A quart goes a long way. I used it to coat the inside of an aluminum oil pan of a car engine from the teens.
Date published: 2014-12-10
Rated 5 out of 5 by from Greaqt for keeping inside of engine clean Have used many times in race engines greatest sealer you can purchase.
Date published: 2013-11-18
Rated 5 out of 5 by from good oroduct The product is easy to work with. It dries fast .
Date published: 2011-10-26
Rated 4 out of 5 by from Glyptal red Reviews say its really good, we'll see! Using it on boat engine lifter gallery for oil control. 
Date published: 2014-11-01
Rated 4 out of 5 by from Glyptal paint is a non conductor of electricity. Edison invented it. What I usually use it for is the inside of iron blocks that run on Nitro. The Nitro doesn't have an effect on it like other paints do I used this paint on a rotory table that goes on my mill. This will keep the oil from leeking from the inside out.
Date published: 2013-09-19
Rated 4 out of 5 by from magnificent I have used this stuff for years on everything that has an oil product in it! from Race motors to rear end differentials,to Air compressor pumps and tanks.. you cannot beat this stuff if you want it sealed up for slick for oil returns,and cleaner oil too.
Date published: 2011-12-29
Rated 4 out of 5 by from Glyptal Glyptal has bee my choice for coating internal surfaces for years. It allows the rough interior casting surfaces to smooth out and allows lubrication to return to it's sump without "clogging" or building up as can be seen when re-building components. It applies easily and a quart goes a long way. IT IS PRICEY, if you can afford it I wolud reccommend it's useage.
Date published: 2011-02-26
Rated 4 out of 5 by from Probably not made for this, but...... A fellow tech here has used this product to eliminate the high-frequency "singing" from the high voltage transformers in LCD display backlight circuits. He just brushes it on and lets it soak in overnight. Are you listening, Samsung? JR decided not to publish this one because this is not an approved application
Date published: 2010-09-12
Rated 4 out of 5 by from Excellent product & easy to use The product is a very good product. It is very easy to use & Eastwood is very helpful with information & tips to make your project come out perfect & without a hitch. Tim
Date published: 2010-03-12
Rated 4 out of 5 by from Glyptal Experience If you have ever opened a motor and seen the inside of the block treated with Glyptal you would understand how great it is. The surfaces are smooth and clean This is a product, like primers, that you rarely see after they are used. However if you like fine detail and clean motor internals you cannot beat it. I use it to finish the internal components of my Maytag motor restorations as well, just simply great.
Date published: 2010-01-26
Rated 3 out of 5 by from Glyptal is Great but Eastwood's Packers Suck The Glyptal product is fantastic as always, but your packaging department TRULY dropped the ball when putting my order together. Both cans arrived completely damaged -- of course on the lid end! -- and were so mangled they wouldn't even open. I requested a replacement which is apparently on the way now but has yet to arrive. Hopefully next time they'll be more appropriately cushioned in the box but I'm not holding my breath.
Date published: 2021-10-18
Rated 3 out of 5 by from Expensive but unique I used this to coat the inside of a transfer case I was rebuilding for my truck to prevent seepage of the lubricants through the case. The stuff is very expensive but a quart goes a very long way. I used less than 1/4 to do the whole case, and I could find no other product that does what Glyptal does. Make sure you have good ventilation and the use of a cartridge-type respirator doesn't hurt. The fumes from this stuff are VERY strong. It begins to dry quickly and is difficult to clean up, so good prep and disposable brushes are a good idea. Also be careful where you apply it, it sets up very hard and is difficult to remove in areas where the thickness could cause fitment or clearance issues. I can't speak to it's performance as I have not put the part back into service but it came well recommended.
Date published: 2010-02-14
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Questions & Answers

We applied the red glyptal 1201 to the inside of cast iron manifolds and it's now peeling away. What solvent can we use to remove the coating? These parts are in hydraulic service so any paint debris can foul a system. We didn't subject them to temps 250F

Asked by: Craig
Lacquer thinner or brake kleen should remove this coating.
Answered by: Kelly H
Date published: 2020-10-19

Does it come in other colors? Does it need to be baked after applying?

Asked by: Element114
This is only available in red and it does not have to be baked after applying.
Answered by: SeanW
Date published: 2020-10-15

I am having a cast iron manifold welded on my boat's engine. My concern is galvanic corrosion between iron and weld metal when salt water hits it. Will your product applied inside the manifold prevent water from contacting the metal?

Asked by: Canuck Sailor
We have never tested this product under those salt water conditions.
Answered by: Bob G
Date published: 2019-01-08

Can i prep my surface with lacquer thinner or alcohol

Asked by: John
When prepping the surface we would recommend using our pre painting prep.
Answered by: SeanW
Date published: 2020-12-10

Can glyptal b used inside a vw engine case & will it peel off after a while ?

Asked by: Ronnie
This certainly can be applied to a VW engine case, as long as it is prepped properly it will not peel.
Answered by: SeanW
Date published: 2018-10-25

Can a second coat of Glyptal be applied after baking the first coat?

Asked by: Butch
If a second coat is desired after baking the first it is crucial that you scuff the entire surface to ensure a mechanical bond.
Answered by: Scott C
Date published: 2019-09-12

Other than being free of grease and oil, how must the surface be prepped? Can light rust be covered? If rust must be removed, can a material like Eastwood Fast Etch be used? If so what must be done after the Fast Etch is applied?

Asked by: Super A
We recommend removing all the surface rust. Fast etch is a great option and would only require a quick wipe down with our Pre after you are done.
Answered by: Scott C
Date published: 2018-01-22

How is the Glyptal 1201 resistance to alkalines?

Asked by: Vidar Nilsen
Here is a list of all the specs we have on this product.
Answered by: Scott C
Date published: 2018-01-19

Can this be used on titanium?

Asked by: rcm83
This can certainly be used on properly prepped and cleaned Titanium.
Answered by: Scott C
Date published: 2018-01-17

Can Glyptal be used on porous cast aluminum? It would be exposed to direct, hot exhaust gas. Will it hold up?

Asked by: Numerick
This product can certainly be applied to cast aluminum but is only rated up to 275F.
Answered by: Scott C
Date published: 2018-01-03

Does Glyptal require baking to finish the application?  Should Glyptal be applied before or after powder coating?

Asked by: Poppa
This product can be heat cured or air dry. It should be applied after powder coating.
Answered by: Scott C
Date published: 2017-10-30

Can it be used on stainless steel?

Asked by: retube
Yes, this product can be used on stainless steel.
Answered by: KHoffnagle
Date published: 2017-10-09

hi,  one qty=49$ so  one qty= how many liter.

Asked by: anjum123
One US quart is 0.946353 liters. A quart is about 5 percent less than a liter.
Answered by: Jim Boatright
Date published: 2018-04-24

I am restoring a 49 JD B. I have used glyptal in the eng & trans case. Can it also be used inside the top & bottom radiator tanks, or do you recommend another product?

Asked by: Scott72
This could certainly be used in those locations as well since this has excellent resistance to moisture.
Answered by: S Church
Date published: 2017-05-08

What is the dielectric strength of this product?

Asked by: Marc Crimboli
The Dielectric strength is rated at 1500 volts per mil.
Answered by: S Church
Date published: 2017-05-06

Is there a recommended bake time and temperature for the 1201 Glyptal Paint?

Asked by: Toom
If you would like to bake the product on to speed drying you can cure it for 2 hours at 257F.
Answered by: S Church
Date published: 2017-07-08

Can multiple coats be applied before baking?

Asked by: Andrew41
We recommend one or two coats only when applying Gylptal. You can certainly apply both coats prior to baking it dry.
Answered by: S Church
Date published: 2016-08-05

can i use this on aluminum

Asked by: Speedy G
Yes it can be used on aluminum
Answered by: SeanA
Date published: 2017-11-01
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Glyptal Red Brush On 1 qt
Out Of Stock. Due back January 29