Oakroadsteve

I typically use 5-30 Mobil One in my CLs...My thought is a lighter weight like a 5-20 might free a few ponies but I do not want to do so at the expense of less protection....I live in South Florida and would appreciate any thoughts concerning the use of 5-20 weight in this area..

I have heard that Royal Purple is the best that money can buy. Would it be worth the extra $$ to upgrade from Mobil One??

Karanx7

iTrader: (2)

5W-20 will give you slightly better MPG, and it is perfectly safe to use in the engine. The 02-03 TL cars actually specified 5W-20 for the MPG reasons, so you know it's safe since it's the same engine.

It's worth the extra $$ to use synthetic, but Royal Purple isn't going to be worth a $50 diy oil change.

fsttyms1

Personally, i wouldnt waste any time or money on RP, and you arent going to gain anything noticeable hp wise so i wouldnt change it just looking for that.

aznboi2424

iTrader: (10)

03 CLs are also spec'ed for 5w-20 as well. Same J32A2 engine for all 2G CL and TL Type S cars. I personally rather go 5w-30 cause of the extra protection. I mean how much of a difference can 5w-20 really do?

OperationDarkie

iTrader: (1)

The only reason to use RP is if you plan on NOT changing the oil for 10k miles, had a friend who wanted to see if it was worth it, and he basically said unless you are racking up more than 10k miles without an oil change only then would it be worth it since the price is rather high, but this guy drives for hospitals delivering organs and supplies so he says only worth it if putting stupid high miles on an oil change.

5w-20 is what I use in the winter and 5w-30 is what I use in summer/construction season here in IL.

fsttyms1

I put 15k intervals on M1 EP without issue Gone over 20k a few times as well. Its FAR cheaper than RP. Also another great reason to use it is that it is better on start up in COLD weather.

Tosh

If you're in S FL, you can easily use 10W-30. I just use whatever full synth is on sale at O'Reilly's and let it go 10k miles, and it comes out clean enough...

aznboi2424

iTrader: (10)

on M1 EP for extended OCIs. I have a case of that stuff in my garage. I'm too scared to go 15k though, I usually go 12k. Takes me over a year to do that anyway.

OperationDarkie

iTrader: (1)

Oh I don't use RP myself I just get the Mobil 1 synthetic 5 gallon jug from wal-mart for 20 bucks, and a wix oil filter from rock auto and call it a day.

Thinking about switching to Denso oil filters since they are only 3 bucks and some change.