Fully synthetic: Castrol Formula RS 10W/50 or Caltex Havoline Fully Synthetic 5W/40?

**wiretap_md** · July 17th, 2004 04:05 PM

Which is better? Found these 2 products kasi at Ace Hardware and Robinson's Handyman. Both almost have the same price and have the API-SL rating. Thanks!

**khayib** · July 17th, 2004 06:28 PM

I think based on our weather condition and worst driving condition, 10W50 will perform better than a 5W40. I'm using Castrol Magnatec right now and I feel it to be better than other semi-synthetic oil brands.

**jackaroo** · July 18th, 2004 06:18 AM

Castrol's formula RS has a good following in europe but so does caltex/texaco in the US.

Have you heard of Liqui-moly full synth 5w40? It's known as Lubri-moly in the US but is a german made oil- great reputation from the users. Competitively priced, about P2k for 5L locally.

**tsinitutoy** · July 21st, 2004 11:33 AM

sorry, newbie here. ano po bang ibig sabihin ng 10W50 at 5W40? ano po bang difference nila? any info on mobil-1's new fully synthetic oil? yung kino-commercial sa F1.

**aRChiVe** · July 21st, 2004 02:19 PM

read this http://www.chris-longhurst.com/carbibles/index.html

Originally posted by tsinitutoy
sorry, newbie here. ano po bang ibig sabihin ng 10W50 at 5W40? ano po bang difference nila? any info on mobil-1's new fully synthetic oil? yung kino-commercial sa F1.

**woodfire** · July 21st, 2004 09:17 PM

Castrol RS 10W50 is a GREAT oil!!!! This is what they use in BMWs in germany and netherlands.

This is what I use in my E36 as specified by Mosselman Turbo Systems NV.

**speedyfix** · July 22nd, 2004 12:28 PM

isn't the castrol rs that is locally available a 10w40? that's the one i have in the shop eh.

anyway, it's a good oil. i recommend it kapag synthetic yung habol ng owner

**ILuvDetailing** · July 22nd, 2004 01:08 PM

Since we're on the topic of motor oils... is the Castrol RS 10w40 better than the Mobil1 5w50 syn? I checked out the Mobil1 website, the 5w50 synthetic is not listed in their product line, does that mean the stocks available here are old stocks?

**wiretap_md** · July 22nd, 2004 02:23 PM

The Castrol RS I saw available at Ace Hardware was the 10w50 variant.

**woodfire** · July 22nd, 2004 09:13 PM

The Castrol RS I was referring to is 10W50 which is standard oil of bimmers in Germany and Netherlands.

Mosselman Turbo Systems also specify Castrol RS 10W50 in turbo charged bimmers.