Preventive Maintenance '05 RCSB
Sep 20, 2012 | 06:34 AM
#1
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Preventive Maintenance '05 RCSB
Hi,
As the title say, i just bought a '05 RCSB 5.3 stock with 88K miles, PO was an old man and he really don't know anything about the car. So now i have some Q's :
Engine oil change <-- what brand do you recommend, here the temp goes up to 100*+ outside.
Trans oil change + filter <-- againe what brand and do you recmoned and type of oil, and/or adding friction modifier.?
Diff <-- stock 10 bolt and going to swap eaton POSi later, so i should wait or do them all now?
spark plugs ? type and gap, i'm stock 4 now and later it will be cammed/243 heads/ NNBS intake.
really no issue with cooling system but i'm gonna flush and go with colder T-stat.
any thing missed? your advice is highly welcome
As the title say, i just bought a '05 RCSB 5.3 stock with 88K miles, PO was an old man and he really don't know anything about the car. So now i have some Q's :
Engine oil change <-- what brand do you recommend, here the temp goes up to 100*+ outside.
Trans oil change + filter <-- againe what brand and do you recmoned and type of oil, and/or adding friction modifier.?
Diff <-- stock 10 bolt and going to swap eaton POSi later, so i should wait or do them all now?
spark plugs ? type and gap, i'm stock 4 now and later it will be cammed/243 heads/ NNBS intake.
really no issue with cooling system but i'm gonna flush and go with colder T-stat.
any thing missed? your advice is highly welcome
Sep 20, 2012 | 07:16 AM
#2
With any brand new used vehicle I buy I do a complete maintenance overhaul on it. I'll change he oil, I used to do Mobile 1 before I dropped my 6.0 in. Spark plugs I went with the iridium plugs for our trucks, I'll also change the wires to msd wires. All that is for my peace of mind.
Trans do not change unless there is something wrong with it now.
Diff I did mine when I got back from Germany with about 35k on it, haven't changed it since and now I have 141k. The fluid I used was just some Orielly house brand.
Trans do not change unless there is something wrong with it now.
Diff I did mine when I got back from Germany with about 35k on it, haven't changed it since and now I have 141k. The fluid I used was just some Orielly house brand.
Sep 20, 2012 | 08:28 AM
#3
Hi,
As the title say, i just bought a '05 RCSB 5.3 stock with 88K miles, PO was an old man and he really don't know anything about the car. So now i have some Q's :
Engine oil change <-- what brand do you recommend, here the temp goes up to 100*+ outside.
Trans oil change + filter <-- againe what brand and do you recmoned and type of oil, and/or adding friction modifier.?
Diff <-- stock 10 bolt and going to swap eaton POSi later, so i should wait or do them all now?
spark plugs ? type and gap, i'm stock 4 now and later it will be cammed/243 heads/ NNBS intake.
really no issue with cooling system but i'm gonna flush and go with colder T-stat.
any thing missed? your advice is highly welcome
As the title say, i just bought a '05 RCSB 5.3 stock with 88K miles, PO was an old man and he really don't know anything about the car. So now i have some Q's :
Engine oil change <-- what brand do you recommend, here the temp goes up to 100*+ outside.
Trans oil change + filter <-- againe what brand and do you recmoned and type of oil, and/or adding friction modifier.?
Diff <-- stock 10 bolt and going to swap eaton POSi later, so i should wait or do them all now?
spark plugs ? type and gap, i'm stock 4 now and later it will be cammed/243 heads/ NNBS intake.
really no issue with cooling system but i'm gonna flush and go with colder T-stat.
any thing missed? your advice is highly welcome
I'm also running iridium plugs, gapped to .035 iirc.
First thing I do on any vehicle I buy is a complete service. All fluids, and all filters, just a little piece of mind, so you always know when the filters and fluids were changed last.
Sep 20, 2012 | 09:09 AM
#4
Personally. I run AmsOil full synthetic, bumper to bumper. 5w-30 oil, Trans fluid, 75w-90 for differentials, if it has a g80 in it now, I think you're supposed to use a friction modifier in the rear diff.
I'm also running iridium plugs, gapped to .035 iirc.
First thing I do on any vehicle I buy is a complete service. All fluids, and all filters, just a little piece of mind, so you always know when the filters and fluids were changed last.
I'm also running iridium plugs, gapped to .035 iirc.
First thing I do on any vehicle I buy is a complete service. All fluids, and all filters, just a little piece of mind, so you always know when the filters and fluids were changed last.
Here is the TSB:
GM TSB Said:
LOCKING DIFFERENTIAL LUBRICANT (SERVICE INFORMATION) #91-4-109
SUBJECT: LOCKING DIFFERENTIAL (G80) LUBRICANT - (SERVICE INFORMATION)
VEHICLES AFFECTED: ALL LIGHT TRUCKS EQUIPPED WITH G80 REAR AXLE ALL YEARS
Some light duty trucks equipped with locking rear axles (G80) may exhibit rear axle chatter, especially when turning a corner from a stop.
This condition of alternate engagement and disengagement of clutches in differential assembly is usually caused by contaminated axle lubricant.
To correct this condition, drain and refill the rear axle with SAE 80W-90 GL5 (P/N 10950849).
The use of any additive in locking rear axles (G80) is not recommended. Rear axle additives are designed for use in limited slip differentials which are normally installed in cars. All light duty trucks equipped with RPO G80 make use of a locking differential and the use of additives will delay the engagement of the locking mechanism and may decrease axle life.
VEHICLES/COMPONENTS INVOLVED: ------------------------- ---- Some light duty trucks equipped with locking rear axles, RPO G80.
SERVICE PARTS INFORMATION:
Part Number Description ----------- ------------------ 10950849 Lubricant, Rear Axle (1 litre)
Parts are currently available through CANSPO.
WARRANTY INFORMATION:
As specified in Light Duty Truck Maintenance Schedules, locking rear axle fluid drain and refill is required owner maintenance at the first engine oil change. Failure to drain and refill the rear axle as specified may contribute to a later axle chatter condition. Refer to the appropriate Light Duty Truck Maintenance Schedule or service manual, section OB, for further details on change intervals.
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.
© Copyright General Motors Corporation. All Rights Reserved.
LOCKING DIFFERENTIAL LUBRICANT (SERVICE INFORMATION) #91-4-109
SUBJECT: LOCKING DIFFERENTIAL (G80) LUBRICANT - (SERVICE INFORMATION)
VEHICLES AFFECTED: ALL LIGHT TRUCKS EQUIPPED WITH G80 REAR AXLE ALL YEARS
Some light duty trucks equipped with locking rear axles (G80) may exhibit rear axle chatter, especially when turning a corner from a stop.
This condition of alternate engagement and disengagement of clutches in differential assembly is usually caused by contaminated axle lubricant.
To correct this condition, drain and refill the rear axle with SAE 80W-90 GL5 (P/N 10950849).
The use of any additive in locking rear axles (G80) is not recommended. Rear axle additives are designed for use in limited slip differentials which are normally installed in cars. All light duty trucks equipped with RPO G80 make use of a locking differential and the use of additives will delay the engagement of the locking mechanism and may decrease axle life.
VEHICLES/COMPONENTS INVOLVED: ------------------------- ---- Some light duty trucks equipped with locking rear axles, RPO G80.
SERVICE PARTS INFORMATION:
Part Number Description ----------- ------------------ 10950849 Lubricant, Rear Axle (1 litre)
Parts are currently available through CANSPO.
WARRANTY INFORMATION:
As specified in Light Duty Truck Maintenance Schedules, locking rear axle fluid drain and refill is required owner maintenance at the first engine oil change. Failure to drain and refill the rear axle as specified may contribute to a later axle chatter condition. Refer to the appropriate Light Duty Truck Maintenance Schedule or service manual, section OB, for further details on change intervals.
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.
© Copyright General Motors Corporation. All Rights Reserved.
Use a decent synthetic oil in the rear diff, and personally I use synthetic throughout. Then again I do the extended drain intervals that are recommended with Amsoil ( 15000 miles) with their engine oil. Trans..... I would use at least a good Dexron 3 oil ( factory in an 05). You can use Dex 6 supposedly with no ill effects. Personally I use Amsoil synthetic ATF..... I get Amsoil cheap from a buddy and that is the only reason why, lol.
Spark plugs...... I am still rocking my originals in my 05 with no ill performance, mileage or otherwise and they have 100000 miles on them now. I probably would just use GM stockers or NGK equivalents.
Last edited by 1994Vmax; Sep 20, 2012 at 09:32 AM.
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