Which brand of oil does everywhere prefer? I heard to stay away from Pennzoil and Quaker State because they cause sludge. I am using Castrol GTX.

My CLS has 103K and I am wondering if I should/could switch to a full synthetic like Mobil 1 or Castrol Synthetic. Maybe I should use a high mileage oil?

Thanks in advance.

 

mobil 1! fully sythetic

 

Do a search... this topic has been talked about many times

 

sorry pimp. I tried searching for "oil" "oil preference" "recommended oil" and others and I had a hard time finding anything through the results. You have a thread off-hand?

 

i have 140k on mine and synthetic is working wonderfully.

 

royal purple is very good

 

Mobil 1 Fully Synthetic

 

Royal Purple FTW!

 

juss bought some today + motor FLUSH

 

whaever the local honda dealer puts in works just fine for me

 

 

 

Mobil-1 0-20 and 5-20 for 50,000 miles now. Oil analysis shows extremely low wear.

 

 

here you go

http://www.amsoil.com/products/atm_t...dex_flash.aspx

debate on the best syn has been beaten to death,, if your still using Petro oil,, never mind,,

 

 

I bet if you search the actual oil brand names, you will find tons of threads...

 

Mobil1 is the best if you don't want to pay extra $$$ for Amsoil.
Also, Mobil1 is available at wallmart and any other auto stores.

 

Switching to full synthetic at 100,000 plus can cause problems with seals and gaskets leaking....if going to syn on high miles, they say to go the blend-syn oil route first and if no problem go to full syn....

I use M1 in the acura...my 1990 gmc sub...is at 330k miles on regular quaker state every 3000 miles..??? Main thing appears to be to change oil on a regular bases....

 

[QUOTE=Texas]Switching to full synthetic at 100,000 plus can cause problems with seals and gaskets leaking....if going to syn on high miles, they say to go the blend-syn oil route first and if no problem go to full syn....QUOTE]

It def. can cause problems.... But I started using full synthetic in my integra with 104k and it worked perfect, you just have to check on it regularly to make sure your not losing oil.

I use Lucas 5w-20 full synthetic and it runs like a Dream!

I would go for it man, worst thing that could happen is you have to another oil change if the synthetic is leaking. Just make sure you watch it otherwise you'll be sorry!