wandawoods Posted June 15, 2004 Share Posted June 15, 2004 5w-30 Mobile1 full synthetic is in both my 1UZ-FE (97 LS4 / 96 SC4). realistically, how often should I change engine oil, primarily under city driving condition? also, does life-in-use really matters? I am under the impression that 'full synthetic' lasts longer than 3K/3-month often called for by those oil-change chains... Quote Link to comment Share on other sites More sharing options...
SW03ES Posted June 15, 2004 Share Posted June 15, 2004 I change mine every 5k Quote Link to comment Share on other sites More sharing options...
vyhanh Posted June 15, 2004 Share Posted June 15, 2004 Hi, I thought that I have few cars but you have 7 :o Quote Link to comment Share on other sites More sharing options...
wandawoods Posted June 15, 2004 Author Share Posted June 15, 2004 Hi,I thought that I have few cars but you have 7 :o I won't shock u with how much insurance I have to pay a month! I have two teen drivers under my policy..... Quote Link to comment Share on other sites More sharing options...
vyhanh Posted June 15, 2004 Share Posted June 15, 2004 May I guess that you drive the Corolla/ 200SX and they drive the LS and Merc? ;) Quote Link to comment Share on other sites More sharing options...
wandawoods Posted June 15, 2004 Author Share Posted June 15, 2004 May I guess that you drive the Corolla/ 200SX and they drive the LS and Merc? ;) let's just say the premium is high enough to cover car loan for TWO spanking new 04 LS430... they share the toyota, and 200sx hatchback is my 'pick-up truck'. Quote Link to comment Share on other sites More sharing options...
silvermate Posted June 15, 2004 Share Posted June 15, 2004 i change mine (mobil 1 5-30, full syn.) every 4k sometimes i let it go to 5k, i don't think there is any problem with that. i believe 5k intervals is what they recommend anyway Quote Link to comment Share on other sites More sharing options...
VMF Posted June 15, 2004 Share Posted June 15, 2004 i change every 3k since my engine is gettin old, i would aslo recommend using 10w-3o oil after ur engine hits 100k Quote Link to comment Share on other sites More sharing options...
wandawoods Posted June 15, 2004 Author Share Posted June 15, 2004 since we drive SC4 so littte, 3K in last 10-months, does oil-life matter? in other words, can 10-month old oil be a problem? Quote Link to comment Share on other sites More sharing options...
pgupta Posted June 15, 2004 Share Posted June 15, 2004 I am a big fan of Mobil 1 since 1990 : when I bought my first Toyota PU 2WD. At 250K, its still running. I started with Mobil 1 - since day one, every 3K, then every 5K...then 8K - no major engine trouble. Since then I have added two LS400s. Ironically, the PU oil filter (which costs 1/3rd of LS400) works just fine for the LS400. On the LSs, I started with Mobil One every 5K, then 10K ... now once a year, every 20K or so. Even at 20K the oil flows out the drain with good viscosity than regular motor oil after 1500 miles! But don't follow my example! Just don't loose sleep if you missed the 3K mark with Mobil One! Rumor is that Mobil One tends to eat the crankshaft seals - I did develop a little leak in my Toyota at 200K. Can anybody else opine on this leak issue? Quote Link to comment Share on other sites More sharing options...
VMF Posted June 15, 2004 Share Posted June 15, 2004 no problem for me yet but i'm still switching to 10w instead of 5w-30 as to the oil life i think it does matter, with regular oil u have to change it every 6 month. Quote Link to comment Share on other sites More sharing options...
SW03ES Posted June 16, 2004 Share Posted June 16, 2004 I wouldn't wait until 20k to change it. It costs so little to change the oil why take a chance on waiting? As for time, my rule of thumb is one month for every 1k miles. So if you don't drive 5,000 miles within 5 months, change it anyways. Definately keep the oil changed in your ES300 as the 3.0 V6 has a gelling problem. Quote Link to comment Share on other sites More sharing options...
VBdenny Posted June 17, 2004 Share Posted June 17, 2004 I gave used Mobil 1 for a long time in all my cars. I usually change the oil every 6 months regardless of the milage. I rarely go much more than 3000 - 5000 miles. I respectfully disagree on using the 10w-40. I would use the 5w-30 recommended by Lexus. The 10w-40 will give you worse fuel economy. I have used 5w-30 in cars with over 300,000 miles withour any problem. Also, I have never heard of any seal problems related to Mobil 1. One nice thing is they can't really raise the price of Mobil 1 due to rising oil prices can they. Quote Link to comment Share on other sites More sharing options...
UCF3 Posted June 17, 2004 Share Posted June 17, 2004 VB: Sorry man, I have to disagree, 10W won't worsen your fuel economy in any way. I'm running 10W on my SC, and the only difference I can really see, is the oil returns to the pan slower than on my LS. VMF's recommendation of switching to 10W isn't a really bad one. THe thicker Viscosity will keep your engine parts lubed longer, but it's really not needed if your engine isn't leaking anywhere. I believe Mobil 1 should be offering a High-Mileage Synthetic blend very soon, if not already. I'd recommend that, but not absolutely necessary. Now I change my oil every 6k, and as the company I work for recommends don't keep your oil sitting in the pan for more than 5 months(Idle/not-driven). It will become thick and gritty, and it may cause the engine to stall. Quote Link to comment Share on other sites More sharing options...
steviej Posted June 17, 2004 Share Posted June 17, 2004 since we drive SC4 so littte, 3K in last 10-months, does oil-life matter? in other words, can 10-month old oil be a problem? absolutely. If a car is not driven alot, stagnent the oil is prone to acid buildup which can damage internal parts. Also if the car is not routinely driven as normal operating temps for an extended periods of time (an hour or two) then there can also be a build up of condensation in the engine block/oil. Water and oil don't mix, the water vapor can settle in the oil rather than be burned off. This leads to gelling and/or further acid build up in the oil. Suggested change every 5k miles or at least 2x per year. (several references have gone as far as saying change it every 4 months). steviej Quote Link to comment Share on other sites More sharing options...
wandawoods Posted June 17, 2004 Author Share Posted June 17, 2004 thanks guys for all your inputs! I think I will go by 6-mon rule since we won't drive greater than 1K per mon. on average, so mileage rule will not apply. 10w for my SC, and 5w for the LS. as for the big headache from my ES...well, can oil burning and blue smokes be the result of 'gelling' which causes damages to valve stem/gasket? Quote Link to comment Share on other sites More sharing options...
SW03ES Posted June 17, 2004 Share Posted June 17, 2004 Yes, definately. Quote Link to comment Share on other sites More sharing options...
99lsguy Posted June 17, 2004 Share Posted June 17, 2004 I've will hit 6 months and about 4700 miles next weekend.......that's my next change (to busy over Father's day) I used to put 15-17K a year on my car.........but now we drive my wife's Sequoia everywhere ;) Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.