Product Price Active Ingredient Solution Strength (percentage) pH Level (none) Temperature Resistance (degrees Celsius) Safe for Parts Application Method
Griot's Garage Griot's Garage Engine Cleaner (Item# 10959, 22 Ounces / Gallon)
US
£54.48 Spray on Engine Cleaner and agitate the area with a detail brush to remove grease, oil, dirt, and grime.

Griots Garage Engine Cleaner is an easy spray-on engine degreaser meant to loosen and break up grease, grime, and engine gunk. It's designed to be agitated with a detail brush and then wiped clean to prep your engine for dressing.

★ Ideal for

The only concrete spec found is that it is an easy spray-on, agitate-and-wipe cleaner for grease and engine gunk, but no online details were found about temperature resistance, so cold vs hot performance cannot be confirmed from specs.

WD-40 WD-40 Specialist Machine & Engine Degreaser 18 oz (UPC 07956730007 6)
US
£5.90 Ready-to-Use 10.5 pH to 11.5 pH Spray

WD-40 Specialist Machine & Engine Degreaser is a water-based, foaming spray that penetrates to remove grease, oil, dirt, adhesives, and grime with low residue. Its nozzle sprays up to 5 feet for cleaning engines and other machinery components. It is intended for use on automotive and truck engines, tractors, industrial machinery, and metal tools.

★ Ideal for

It is a ready-to-use foaming spray with a water-based formula and low residue, and its foaming action plus long-distance spray up to 5 feet supports engine cleaning in both cold and hot conditions by helping lift and rinse off grease and grime without mixing.