Mobil 7500 before the Full Syn switch to M1 or M15,000?

[OCB]

I have a 98 Acura Integra GSR with 95 K. I bought it used at around 80k. Not sure what was in it before. I have Auto Rxd the engine and it has had a steady diet of GTX 10-30 in the Summer and GTX 5-30 in the Winter always changed at 3K.

My car runs great and I want to put the very best stuff in there that I can! Now I seem to be reading mixed reviews on the GTX.

Would it be smart to run the Mobil 7500 semi syn for 5k - 7500 before switching over to a full synthetic like Mobil 1 or the new M15,000

I was just thinking maybe it would be a good idea to run a semi synthetic before switching over to a full syn? Does it even matter?

I would love to get 200,000 out of this car and I want to put the very best stuff I can in there to get the most out of it. Thanks!

 

[jthorner]

I don't see any advantage to using the 7500 as an intermediate step on the way to M1.

If you are going the M1 route, I would choose the Extended Protection version.

Certainly on M1EP you could extend your oil change interval to 6,000 miles or more. It is a shame to dump a good oil like that at 3,000 miles.


John

[ March 05, 2005, 01:54 AM: Message edited by: jthorner ]

 

[OCB]

Would anyone here really go 15K on that? Would you go 15K on the same filter. And how many people can go that far with out loosing some oil?

 

[deepsquat]

certianly would run a UOA on any oil before going 15000 miles ...I know I can do it with my car have done it 5 differant times ..with UOA ...but I have a bypass filter

 

[TooSlick]

John,

So you think this $5.25/qt, "Uber Lube" from my pals at ExxonMobil will really last for all of 6000 miles in a high performance application?

Seriously though, I think 10,000 miles is about right for the GSR; given the sump size, mpg and specific power output. I would highly recommend using a bottle of AutoRX first, however, along with a Mobil 1 oil filter. The Mobil 1, 5w-30 EP formulation would be my recommendation as well.

Oil Change Interval (OCI) Formula:

OCI = (C*)(mpg)(sump-qts)(cubic inches/Hp)

I'd use a C* of 120 for the new Mobil 1, EP oils, the same as for the Amsoil 5w-30/10w-30/10w-40 formulations.

TS

 

[AndyH]

quote:

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Originally posted by OCB:
Would anyone here really go 15K on that? Would you go 15K on the same filter. And how many people can go that far with out loosing some oil?

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If you read Mobil's web site on their new EP Mobil-1 oils, you'll see that they recommend checking your oil level from time-to-time as you likely will need to add some "top-up" oil over a 15k OCI.

 

[OCB]

Thank you everyone for the comments!

TOOSLICK, I auto Rxed the engine and completed the rinse phase about 2 oil changes ago. Do you think I should RX it again before the switch to a full syn?

And if so so what oil do you suggest I use for the process. Mobil EP 5K?

I check my oil level every fill up and after about 1000 miles I notice the oil level is down a bit and I always start adding some. I hit VTEC alot and I feel like this might have alot to do with it.

quote:

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Originally posted by TooSlick:
John,

So you think this $5.25/qt, "Uber Lube" from my pals at ExxonMobil will really last for all of 6000 miles in a high performance application?

Seriously though, I think 10,000 miles is about right for the GSR; given the sump size, mpg and specific power output. I would highly recommend using a bottle of AutoRX first, however, along with a Mobil 1 oil filter. The Mobil 1, 5w-30 EP formulation would be my recommendation as well.

Oil Change Interval (OCI) Formula:

OCI = (C*)(mpg)(sump-qts)(cubic inches/Hp)

I'd use a C* of 120 for the new Mobil 1, EP oils, the same as for the Amsoil 5w-30/10w-30/10w-40 formulations.

TS

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[TooSlick]

OCB,

The Mobil 1 should slowly clean out any remaining deposits. I'd just go ahead and put it in there.

I think the new EP formulations are going to be very good oils BTW, simply based on the additive chemistry. I'd certainly recommend them over the GF-4 formulations with their reduced additive levels, even for brand new engines.

TS