Does Castrol GTX HM have some cleaning power...???

[Cheburashka]

Does Castrol GTX HM have some cleaning power...??? My car in the past had neglected service from previous owner .... my valve train looks very dark yellowish color ..and had some deposits on valve covers also ....
Do Castrol GTX HM can clean overtime this ..... plus i have a oil consumption and seeping oil from back of the engine...

 

[dave1251]

It may help but that varnish is on there pretty good. What engine is this?

 

[Cheburashka]

Mercedes E430 2001 engine is M113 iv cleaned last year this valve cover.... i just dont know how engine looks inside ...
Some guy mentioned on mercedes forum this " It looks like conventional oil was used by the looks of the valve train. And that would look clean unless it was changed by the FSS schedule. Paper filters are used by the quick lube places."

 

[LeoStrop]

You can try to run some short OCIs and then take the valve cover off again and see for yourself. Unless it's not a simple job for that engine

I am sure some would also be interested!

 

[PimTac]

Looks like good old Castrol GTX orange.

 

[Triple_Se7en]

Originally Posted by PimTac
Looks like good old Castrol GTX orange.

Exactly!
The worst varnish I ever had was 2-3 decades ago when I used Castrol GTX for 4-5 straight OCIs.
Switched to Pennzoil synthetic and it was gone three OCIs later.

 

[Whipcitywrencher]

Looks like neglect to me, and you probably need some valve seals now.

 

[dave1251]

HM oils may have a bit of POE this may do a bit of cleaning 2-3 3K OCI'S would not hurt it's worth a try.

 

[benjy]

HM oils are more about less leakage, Ester oils like Redline are said to clean the best, cant go wrong with any Redline product if the cost is not an issue.

 

[ka9mnx]

Doesn't look that bad to me. New cover gaskets, HM oil and move on.

 

[demarpaint]

I doubt it will clean that varnish up, in fact I doubt any oil will clean that varnish up. Having said that, clean the valve cover manually, throw it back together and worry about something else.

 

[Triple_Se7en]

Pennzoil synthetic cleaned my Castrol GTX varnish. No more than three OCIs later (18K).

 

[Nickdfresh]

I concur it doesn't look that bad. You could try a qt. of Rislone for a full OCI...

 

[DavidJones]

The film looks a bit bad, but honestly, it's just a film. Unmeasureable. I'd consider running a good synthetic with a short change interval a time or two and then call it a day.