Hi, everyone !

Glad to join You all right here, this will be my ever first thread to share with You !
We have a 244DL with B23A under the hood and correct me if I am wrong but I've read that this particular one has a distinctive thing over the B19/B21 engines aside from the capacity which is the Two water Plugs on both sides of the block, to make it clear and in brief We used to have 20W50 oil lubing it instead of the standard 10W30 all for being overpriced (not here to bring my drama) and was left in for a year and couple of weeks that when changed it seemed to lose its characteristics and it'd shear (certainly it Would after this long), back to the basic issue whenever this engine is cold started, I can hear some violent knocks noise that doesn't last for minute but later on it got worse and it actually lasted way longer than It used to that It takes a long while about over (5 minutes) and still to get quieter, it worths mentioning that I can also hear some rattling sound afterwards when idling at about 750-800 RPM.
started to get skeptical about the oil pump, Crankshaft main bearings, Camshaft Bearings.

Any ideas or pieces of advice on this one and I'll be Grateful, Thanks

 

I ran out of breath reading this sentence. You need to clarify it a bit more.

 

I hear a lot of knocks when starting up the engine, and when idling it keeps making rattling sounds, 20W50 lubes for now.

 

20W-50 is to thick but I assume the previous owner decided to use it to try to keep the piston slap noise down. You should do a compression and leak down test to see what kind of problem you may have the noise is typical for high mileage engines. Mine started at around 130K miles and I still have it at 376K miles.

 

Honestly, We were the first ones to use this oil and not the former owner.

 

I guess I would ask why . Look at the OM and see what oil you should use and then change it. As for the noise have a mechanic listen to it . It may be typical Volvo piston slap or something else. Have it checked out.

 

by your profile it seems you are in Egypt? in such a climate, you may try a dose of 15w40 oil and see if that helps?

 

I do already know the standards which's 10W-30 for Oil engine in the Moderate climate and 20W-40 as an alternative, the thing is being overpriced.

 

I thought piston slap was mostly an issue with early B230 engines, with their 'low friction' modifications. B23A is an older redblock, and I think -A means carbs rather than EFI ? per a couple docs I perused online, B23 was only used for a couple years, like 82-84